Original sentence: 454ss Chevy trucks also had a one of a kind 14 Bolt corporate rear differential with 5 lug axles.A Turbo Hydramatic-400 3-speed automatic transmission and 3.73 rear axle ratio added to the truck's performance.For 1991 a 4L80-E four-speed electronic automatic transmission was added to the 454SS, 25 more horsepower, and even higher torque: 405 lbs/ft at 2400 rpm.It was available only as a 2WD half-ton regular cab short box in Onyx Black,white,and bright red.Red interiors with sport buckets were most common, Some grey interiors can be found and in very very rare ocasions, I've seen tan sport interiors in black 454SS's.Unique to the 454ss only, GM's "G80" RPO code limited slip differentials were standard
Edited sentence: A 3-speed automatic transmission and 3.73 rear axle ratio added to the truck's performance.For 1991 a four-speed electronic automatic transmission was added to the 454SS, 25 more horsepower, and even higher torque: 405 lbs/ft at 2400 rpm.It was available only as a 2WD half-ton regular cab short box in Onyx Black