Question: The SR8 sportscar has an engine similar to the GSX1300R developed by what company?

Context paragraphs:
Michael Owen's WLS 2000: Michael Owen's WLS (World League Soccer) 2000 is a soccer video game for the Nintendo 64.  It was released in 2000.  It features the English soccer star Michael Owen.  It was re-released in North America as a women's soccer game under the name Mia Hamm Soccer 64  on November 9, 2000, starring American soccer star Mia Hamm.  Both games use a graphics engine similar to the ISS series.  The game is notable for its absence of secret audio track, but still received favorable reviews from both consumers and critics.

Advanced Engine Research: Advanced Engine Research, Ltd. (commonly known by the abbreviation AER) is an auto racing engine manufacturer based in Basildon, Essex, England.  Established in 1997, AER has developed winning engines for a number of high-profile international race series in sports car, prototype racing, rallying, touring car, and open wheel racing.  They have designed engines derived from road car platforms, but their emphasis is on clean sheet designed engines with a focus on electronics and turbochargers.  Their engines have raced in the 24 Hours of Le Mans, the World Endurance Championship (WEC), the European Le Mans Series (ELMS), the United SportsCar Championship (TUSC), GP3, British Touring Car Championship (BTCC), Nissan/Renault World Series, Grand-Am, Paris Dakar and FIA Sportscar Championship.  They have worked with a number of manufacturers including Mazda, Ford, Hyundai, MG/Rover, Nissan, and Toyota.  In 2012, AER developed and built Formula One turbo test engines to current rules and in July 2012, AER was chosen as engine partner and supplier to the new GP3 racing series.

Vector WX-8: The Vector WX8 is a sports car prototype released under development at Vector Motors.  It was first shown officially to the public in 2007 revealing the development and the company`s ambitious intentions of creating a next generation sportscar successor to their previous models.  Vector claims the WX8 may achieve a top speed of 270 mi/h and a zero-to-60 mph time as low as 2.3 seconds for the version of the car equipped with a 10-litre turbocharged engine.  This engine is described variously on the company's website as being capable of "1800+ HP", "1850+ HP", and "over 1250 horsepower".

Melkus RS 1000: Melkus RS 1000 is a sports car produced by Melkus.  It is a sleek sports car powered by a tuned mid-mounted 3-cylinder 2-stroke 992 cm engine similar to the one in the Wartburg 353.  It has gull-wing doors.  101 cars were made between 1969 and 1979 in the Dresden factory.

Powertec RPA: RPE RP-V8 is the name of a V8 engine series developed by Radical Sportscars in Peterborough, England for use in the SR8 sportscar.  The design is loosely based on the 1.3 L inline-four engine produced by Suzuki for their Hayabusa motorcycle.  The company have designed their own cylinder block and use existing Suzuki cylinder heads.  The two cylinder banks are inclined at 72-degree angle.  Lubrication is provided by a dry sump system.  The engine is mated to a purpose-built transaxle designed by Quaife.

Crude oil engine: The crude oil engine is a type of internal combustion engine similar to the hot bulb engine.  A crude oil engine could be driven by all sorts of oils such as engine waste oil and vegetable oils.  Even peanut oil and butter could be used as fuel if necessary.  Like hot bulb engines, crude oil engines were mostly used as stationary engines or in boats.  They can run for a very long time; for instance, at the world fair in Milan in 1906, a FRAM engine was started and ran until the exhibition was over one month later.  A crude oil engine is a low RPM engine dimensioned for constant running and can last for a very long time if maintained properly.  It was later replaced by the diesel engine.

Mazda 717C: The Mazda 717C is a prototype racing car built for Mazdaspeed for the 24 Hours of Le Mans under the Group C Junior formula.  It was the first sportscar built by Mazda since the ending of their running in GT with the RX-7 in 1982.  It used a 2-rotor "13B" Wankel engine, similar to the production engine in the Mazda RX-7.  The bodywork and chassis were actually built by Mooncraft with assistance from Mazda.

Suzuki Hayabusa: The Suzuki Hayabusa (or GSX1300R) is a sport bike motorcycle made by Suzuki since 1999.  It immediately won acclaim as the world's fastest production motorcycle, with a top speed of 188 to .

Suzuki F10D engine: Suzuki F10D engine is an inline 4-cylinder 1061cc engine that was developed in India by Maruti Suzuki for the domestic market.  It was debuted in the Maruti Wagon-R in India in 2001.  It was briefly installed in Maruti Alto and it was the engine that the first Maruti Zen Estilo came with.  This engine is very similar to the 3-cylinder F8D 12-valve engine that was optional on the Maruti 800 at the time.  The bore and stroke of F10D is the same as that of the smaller sibling and shares quite a few parts like pistons, rings, conrods and valves.  The cast-iron engine block is very similar to that of the older F10A 970cc engine that powered the earlier Maruti Gypsy and Maruti 1000.  Both F10A and F10D shares the same stroke length; but interchangeability of parts between these two engines is not known.

Nuffield Gutty: The name Nuffield Gutty was used for three prototype vehicles built in 1947 in an attempt to meet a British War Department specification for a light field car to replace the American Jeep that was in service in large numbers following the war.  This vehicle featured a horizontally opposed 4-cylinder engine similar to that designed for the planned small post-war car to be called the Morris Mosquito, that eventually appeared (with a conventional vertical side-valve engine) as the Morris Minor.

Supporting paragraphs: Powertec RPA Suzuki Hayabusa
Answer: Radical Sportscars