kb work fine
the rings expand more but close up to same when running- thy are supposed to do that
factory rebuilder pistons may be "copensated" = compression height lowered to make up ccs gained from the bore-
which in .060 would be significent
plus many are budget built
BVVC
remind me what heads, what ccs, bore and stroke etc
cheers
ps disclaimer
I helped design the quench dome kb pistons- so highly recommended for open chamber heads- IMHO only way to get the most out of them (except racing)
