OK.. my heads are getting a valve job (quotted 168 bucks for all 32 valves). And I am thinking about doing a .020 over piston and ring kit with new wrist pins. Anyone ever do this yet?? I am gonna take my shortblock to the place that has my heads and tell them to do it up with this kit. If they have to do new rod and main bearings, then so be it. Mahle MOD220571I16 Mahle PowerPak Piston Kits The only change I might change in this kit is the rings. peace!