one of my pistons got damaged some how by the piston ring cleaner, and im thinking about buying a whole set of pistons, but the ones i see for around $100 for my 455 are lower compression, and mine came stock with higher compression. what would i need to make this change work with the other one? and if i just leave everything else the same way but lower compression pistons what power increase or decrease will i notice?
thanks!

 

Less compression with everything else the same will equal less power.

Somebody has to make the same pistons that are in the motor now aftermarket...if they make aftermarket Honduh pistons,then they make them for a 455 Rocket.