heads... exhaust... intake

yeah i have small tires on the front of mine right now and im in the process of upgrading my torsion bars to the V8 cause i have the original bars on it and it was originally a /6 car..... if anyone could give me some websites or something that will help me find some of these heads it would be appreciated.... im really not looking foward to having machine work done around here for the simple fact that people are really liking there work around here and charging an arm and a leg for a 3 way valve job alone so there is no telling what they would charge for other things.... keep the ideas coming by the way im looking for all the help i can get right now... if you have any specific questions about my build as of now that would help you in helping me please ask and i will tell