Looking to put some aluminum heads on my 500efi motors, to get a few more mph and lighten up the rear of my cat, I'd like to hit triple digits.

Check with Bob Madera RMBUILDER on here I think. Best prices in the country on AFR heads

Friend of mine with same engine in his Checkmate, picked up 7-8 mph with installing Dart Aluminums over stock 088's. I think a cam change also.

Bob is the man for putting a nice package for a good price together.
I also think Aeteco has a package listed in classified for a 500efi kit to take it to 625HP. $4700 per engine I think

be careful,he might hit you back!

Damn Mike , guess I didn't even need the blower , just the heads . lol