Ask Bricas, he got his naturally aspirated M62 to get 282whp. Now you're stroking it and putting on heads which should give you more. 370 crank HP is definitely achievable no question but 450 wheel HP you're gonna have to spend alot more. Good luck with your goal but call VACmotorsports if you want some information, they build race M62s and they can definitely build you a ~600 crank HP M62 but it will cost an arm and a leg.
By the way I didn't know the M60 head was superior, can you explain it because I find it intriguing and awesome
Last edited by e39540iv8; 11-19-2012 at 10:59 AM.