As long as you don't plan on spraying any nitrous, I'd go with KB400 hyper pistons. They have a positive dome design, which should allow you to get nearly 10:1 with open chamber heads, if I remember correctly. A 383 with these pistons, some well prepped 452's or 906's and a camshaft in the 238* / .510 range would be my choice for a budget street / strip 383 build.