Question: Who was the engineer responsible for a specfic make of car by a German automobile manufacturer specializing in high-performance sports cars?

Context paragraphs:
Nota: Nota Sports and Racing Cars is an automobile manufacturer in Australia.  The company was founded by Guy Buckingham in 1952.  He was an aircraft engineer and used his expertise to build triangulated spaceframed sportscars.  Possibly Australia's first space-framed cars.  In 1958 the company built a series of all-enveloping aluminium streamlined sports cars.  First called "Streamliners", and later called "Mazengarbs".  Up to 1960 eleven of those were made.  In the late 1950s the company produced Formula Junior cars in both front and midengined formats.  Nota also made a series of specialist monoposto racing cars for the track and hill climbing events.  In 1963 the company made a series of Mini powered sports cars.  In 1964 they started production of the Nota Sapphire an alloy bodied sports and coupe designs with Ford Fiat and Coventry Climax engines.  In 1965 Nota started producing Formula Vee cars for Warrick Farm race track making 34 in the first year.  In the 1960s the company formulised their "Sportsman", a Lotus 7 look alike, which they still build today and are now building in a midengined version for the modern day transverse engines which the major car manufacturers produce.  In 1968 came the Nota Fang Chris Buckinghams first real design, a midengined sports car using a Cooper S engine power plant behind the driver but in front of the rear wheels, their most successful model with over 100 being made.  Later the Fang was equipped with Lancia engines, then Toyota engines, finally being fitted with Toyota's V6 Quad cam supercharged engines with over 400BHP.  In 1973 Nota started with their Marauder range of cars using the same mechanicals as the Nota Fang.  At the same time they were making the Nota Levanti front engine twin cam coupe.  In 1975 the supply of Leyland 1275 GT engines started to run out so Nota contacted FIAT and both Marauders and Fangs were made with the 2-litre twin cam FIAT/Lancia engine.

Muscle car: Muscle car is an American term used to refer to a variety of high-performance automobiles.  The "Merriam-Webster" dictionary defines muscle cars as "any of a group of American-made 2-door sports cars with powerful engines designed for high-performance driving."  A large V8 engine is fitted in a 2-door, rear wheel drive, family-style compact, mid-size or full-size car designed for four or more passengers.  Sold at an affordable price, muscle cars are intended for street use and occasional drag racing.  They are distinct from two-seat sports cars and expensive 2+2 GTs intended for high-speed touring and road racing.

Body flex: Body flex is a lack of rigidity in a motor vehicle's chassis.  It is often something to be avoided by car manufacturers as higher levels of body flex is a sign of structural weakness, and means that the vehicle's suspension cannot work as efficiently - the body takes up some of the 'slack', rather than the parts of the car which were specifically designed for this purpose.  A chassis that flexes may be prone to fatigue and further "softening" with use will eventually result in failure.  Cars of a sporting nature are, therefore, often very 'stiff', while convertibles or cabriolets are not often considered to be good candidates for high-performance sports cars because of their lack of a rigid roof.

Porsche: Dr. Ing.  h.c. F. Porsche AG, usually shortened to Porsche AG (] ), is a German automobile manufacturer specializing in high-performance sports cars, SUVs and sedans.  Porsche AG is headquartered in Stuttgart, and is owned by Volkswagen AG, which is itself majority-owned by Porsche Automobil Holding SE.  Porsche's current lineup includes the 718 Boxster/Cayman, 911, Panamera, Macan and Cayenne.

Graham Duxbury: Graham Duxbury (born 1 December 1954) is a South African racing driver, business man, and motorsport commentator.  Duxbury won the South African National Drivers Championship in 1982 engineered by Ken Howes driving initially a March 78B before taking delivery of a ground effect March 822.  He won the Daytona 24 Hours in 1984 driving for Kreepy Krauly Racing, an all-South African team in a March 83G-Porsche again engineered by Howes.  He shared the win with Sarel van der Merwe and Tony Martin.

Spoiler (car): A spoiler is an automotive aerodynamic device whose intended design function is to 'spoil' unfavorable air movement across a body of a vehicle in motion, usually described as turbulence or drag.  Spoilers on the front of a vehicle are often called air dams.  Spoilers are often fitted to race and high-performance sports cars, although they have become common on passenger vehicles as well.  Some spoilers are added to cars primarily for styling purposes and have either little aerodynamic benefit or even make the aerodynamics worse.

Saleen: Saleen Automotive, commonly known as Saleen, is an American manufacturer of specialty high-performance sports cars and high-performance automotive parts.  Saleen is headquartered in Corona, California, USA.  On June 26, 2013 Saleen Automotive, Inc became public through a reverse merger.  It is listed on the OTC Bulletin Board and is controlled and majority owned by Saleen brand founder Steve Saleen.

Lamborghini Countach: The Lamborghini Countach is a rear mid-engined, V12 sports car produced by Italian car manufacturer Lamborghini from 1974 to 1990.  Its design pioneered and popularized the wedge-shaped, sharply angled look popular in many high-performance sports cars.  It also popularized the "cab forward" design concept, which pushes the passenger compartment forward to accommodate a larger rear-mounted engine.

Transmission Technologies Corporation: TREMEC (Transmisiones y Equipos Mecanicos SA de CV, formerly Transmission Technology Corporation - TTC) is a manufacturer of automobile transmissions and drivetrain components, best known for their performance line of manual transmissions. TREMEC transmissions are used in products ranging from supercars and high-performance sports cars to heavy duty, vocational and commercial vehicles worldwide.  The portfolio of products includes manual transmissions, dual clutch transmissions, gears, shafts, clutches, friction materials, shift systems, synchronizers, mechatronic systems, transmission control units, and control software.

Mercedes-Benz SSK: The Mercedes-Benz SSK (W06) is a roadster built by German automobile manufacturer Mercedes-Benz between 1928 and 1932.  The name is an abbreviation of "Super Sport Kurz", German for "Super Sport Short", as it was a short wheelbase development of the Mercedes-Benz Modell S.  The SSK's extreme performance and numerous competitive successes made it one of the most highly regarded sports cars of its era.

Supporting paragraphs: Graham Duxbury Porsche
Answer: Ken Howes