Just askin a question here so no offense. You say you're not wanting to "build a race engine"......but going high dollar KB pistons you might as well be. Why not see what it looks like when you tear it down? It might not even need boring.
Hughes Engines makes a line of camshafts called Whiplash that are designed to maximize the cylinder pressure in a low compression stock engine while also giving it a nice rumble.
Not every single build has to have high dollar pistons. Don't let glamour get you into a project that you'll regret because you get yourself into a financial hole trying to build. This hobby is about having fun. You can have a lot of fun on the cheap of you do it smartly.