Stock It is rated 300HP, With the webers, better headers, no smog equip and future cam change 450HP is easy to get. Little port matching and other Jag ticks I've yet to learn can bring big HP numbers. v12 Lister Jags that they race over seas run 850 plus.
OH do I wish. Ever see what a cam for a V12 costs? About 4 grand for one of 4 cams. Ouch!! I'll stick to the Jag. Guess I'll be building a Hybrid Bastard!!
The V12 is from a 1986 Jaguar XKS as is the auto tranny. Someday I hope to go stick, but there is enought to do now. Also have the Jag IRS, got my axles and swing arms shorten and chromed.