The 2.3 L W41 was first used in the oldsmobile calais in 1991 they were used in SCCA road racing.The trans was a 5 speed manual getrad with a LSD differential and 3.94:1 final gear ratio.In 92 and 93 the 2.3l was used in the olds scx without the trans ,both had 190 hp ratings.Production on the 1991 W41 - "204" If theres any questions please email,Thanks MIKE