If you want custom pistons contact venolia, or Ross. Once you step into the custom price category, (which isn't as completely terrifying as you might imagine) The fellas statement was "we make it to the customers specifications" you can get any compression you desire, any compression height, ring/ring groove sizes, wrist pin size/retaining method. They would even make pistons that were .005" over, (.015,.025 etc) Meaning that you could get slightly smaller 455 pistons. Hence the term "custom" pistons. That way you won't have to worry about possibly overboring your engine. As it sounds like you have and will be spending plenty on this engine. Just a thought.
