XP-400
Dave:
If I'm not mistaken, Tom has the XP-400 with high compression pistons that Scotty Germain flew at Reno a few years ago. That is not the 400 we were testing. We were testing the #3 engine that was their test bed engine that went through various piston changes, sump changes, etc. etc. We put about 50 hours on the engine here in our shop total.