Found a bit of info on a jeep forum
JEEP FORUMmight want to snoop around jeep engine builders and or forums, or find an old MP catalog from that era
Thanks for the link and the idea. I had seen that thread but unfortunately it doesn't list compression height. I was going to try and calculate compression with these, without actual measurements (depth in hole, cc heads). I adopted a complete, rebuilt 360 with these pistons (used a bore scope to see part number those spark plug hole). I may just tear the engine apart and measure, probably a good idea anyway since I didn't bolt it together.