Originally posted by Piers
... an HX40 that actually comes stock on a 5. 9 marine engine [I just found it & it spools quick, but still has a 4" outlet for better exhaust flow]
Some top secrect governor parts, of course some 12valve SM injectors & bigger injection lines to get the fuel in quicker, did I mention a camshaft that works good from 1000rpm to 5500rpm