I am rebuilding my 5.7/350 for a '97 Tahoe. I have a Vortec Fuel Injected intake manifold. There are no performance replacements that I can find. Every manifold requires me to change my injection. Anybody know anything i dont? Or other ideas to get more power. The major replacement(reason for the overhaul) are new GM Performance heads, piston rings, lifters and rod bearings.

 

Look at Edelbrocks website they had one for my throttle body. I know what you mean though hard to find!