Domed pistons

I am just wanting to get some feed back on these pistons before I pull the trigger and order them. The part number is
DODGE Keith Black KB Performance Piston and Ring Kits KB399KTM-020
With factory heads what compression ration would these get me up to. I have access to AV gas but I'd like to be able to run 93 if possible.

The engine is a 76 318.