440 comp. ratio question

Ok i have a 1978 440 all stock and I'm guessing these are low comp. and low hp now my question is .

I have a set of .030 over flat top six pack pistons if I use these pistons are they taller than what's in that 78 motor and what kind of comp will I have say 9.0/9.5/10.0/10.5

I would like a ball park please , I just want a little more power out of it.

And it will have a hyd. .484 .484 cam in it


Thanks Mike