Mik: Ummm if they're built right and looked after they don't get RK 
15 year old 100,000 mile old motor 16 psi boost 3 quarts of oil marginal ignition system that's never been replaced then take it out and race all comers and "Gee I wonder why it blew up 7M's are shit I'm getting a 1JZ" DUHHHHHHHHHHHHHHH!
(bit of a clue no motor built would behave differently under those conditions)
15 year old 100,000 mile old motor 16 psi boost 3 quarts of oil marginal ignition system that's never been replaced then take it out and race all comers and "Gee I wonder why it blew up 7M's are shit I'm getting a 1JZ" DUHHHHHHHHHHHHHHH!
(bit of a clue no motor built would behave differently under those conditions)