How to build a 13 second 340 Duster

Well said. I suppose the engine dyno before and after individual changes might allow one to indirectly infer operating compression effects. I guess manufacturers doing research might have some interesting data.

I'm hoping the mopar performance secrets book might give a little insight.

For me it's mainly satisfying curiosity as I don't plan to do much beyond a stock configuration, but learning a bit along the way is part of the fun.

Arlie