273 Commando

So is anyone running a 273 commando engine? If so, you still at 10.5 compression and how's she run on pump gas?
My 273 has been bored 40 over and am only running a dished piston with 4-valve relief. Figure I'm down around 8:1.
So befor I order a set of pistons, I would like to hear a little feed back.
Thanks.