How many sets do you have out there now
A dozen and counting
Any good longevity reports ( # of dyno pulls at xxxx whp, miles, races, pulls, etc) or is it still too soon to know for sure if they cure the cracked piston issue?
Don't take this as me dodging the question please. I would much rather the customers say what they are doing than me. Anything I might report is second hand at best. My engine runs at ~690 HP and pulls a trailer at 25,500 CGVW on a regular basis. Always set on kill.
Any issues at all yet?
None that I am aware of, unless you want to count my supply chain issues a while back. That seems to be better now.
Any been ran for a while (dynoed at high HP several times, sled pulled/drag raced for a season or more, daily driven, etc.) & pulled back out to analyze or check yet?
None torn down yet, but I think there are a couple that will be torn down this off-season. Head gasket and something else. IIRC