Need a plan - component selection for restoring 68 340 that runs on 91 oct

Wymrider, you clearly know a lot more about this art than I ever will. I get the gist of what you are saying but I have only just played with the Wallace calculator and don't really understand how to use the published data and that tool to get to my goal. That is why I started this thread. The goal is not perfection on the inside. I don't have to have an OEM cam or pistons or anything else you cannot see. My goal is the best performance given these basic constraints - a restored version of the 68 car that I posted the fender tag earlier in this post running on 91 gas. Sum that car up as 3.23 rear, std 4-speed, and must look completely original from the outside. So, X heads, AVS carb, HP exhaust manifold, et cetera.

With those goals and reading your post above, are you recommending a Voodoo 703 with something like the L2316 or KB243 pistons. Is that about right?