I posted a couple days ago about a 77 motorhome 440 I have with 8:1 compression 452 heads and cast crank. The motor only has 48,000 miles on it and the bores are clean with no ridge. If I get a piston rebuild kit to up the compression to 9.5 can I install them with the other original components without any problems ? what will it do to the balance ? I've never done a motor this way I've always gone all the way and got everything new, machined and balanced.