[Tommy]

Here's this amatuer's opinion on chosing parts for an engine. The heads will ultimately determine the air flow in and out. The valve train will determine the upper RPM limit, and the crank and pistons will determine upper limit on compression ratio. Varying any component may affect others. For example, flat pistons may produce 8:1 compression with one set of heads and 10:1 compression with another. .... It's difficult to express an opinion on the components you listed because they can be used to assemble a moderately strong, meduim compression long lasting engine, or a high compression monster that will require racing fuel and be on the verge of self destruction. It's all in how the parts are put together. Good luck with your engine.