I'm just naturally suspicious of anyone who wants to help me out by selling me something. Could his/her objectivity be just the tiniest bit suspect? After doing a considerable amount of dyno testing on high performance small block Chevy round track engines, I've found that aluminum heads actually rob a lot of the combustion heat to the cooling system, instead of putting that energy to the pistons to help drive the car. They're great for extended full-throttle high RPM operation, like on a high-banked round track where the engine stays wide open and wound tight for extended periods of time, or maybe on a boat engine that spends hours at full throttle. For a street engine- - - -I'm a little crippled since I dropped a Honda Gold Wing on my left leg, but I think I could still outrun you if you tried to GIVE me a set of aluminum heads!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!