Which 454 pistons for 063 heads?? on a budget

Hey Fellas, noobie here with a couple questions.

Well I have a 69 vette that used to be an original 427 car but, now has a 73 truck 454 with flattops (289 block). fortunately it still has the closedport 063 390HP heads, but still only brings compression up to about 8.4-1 . The motor needs freshened badly, so I am wanting to rebuild her... Honestly with the beautiful stainless sidepipes I have on her, she shouldn't sound like a low compression *truck* motor.....*tear*

So, my question is with my 101.9cc 063 heads, what would be a good 454 piston to use? I am looking for more compression but I'm lost when it comes to looking for a closed port piston for a 454 . Looking for 400-500hp limit, not building a race motor or trying to pull out tree stumps, just a nice bbc that I can have fun with on the street.

I have a 427 crank also. Pistons for that seem very resonably priced and would give me the power I want.. Would this be a cheaper route?

Last thing, my heads will likely need rebuilt, including seats (bad popping on left side idle). Would it cost me as much as a new set of heads, like procomps?



Thanks for any information or opinions!
Bryan