In the early 1990's Japan's premier performance products company, HKS, set out to design, engineer, manufacture and test a Formula 1 spec V12 racing engine. Displacing 3.5 liters, the 75 degree, 5-valve 300E (as it was named) produced 650 horsepower at 13,500 rpm. It was track tested at Fuji Speedway in the back of a Yokohama/Advan shod Lola T91/50 F3000 chassis in 1992, but was never used in competition.
