TorqStorm Supercharger build advice needed

Thinking about running the Holley Sniper fuel injection that is meant for the Jeep 258. This will take care of a lot of the worries, I think. We were planning to mod a Holley 500cfm 2bbl and do the mechanical pump with a boost reference line to the vent hole, but I think I am going to see if he wants to just EFI it. Between the EFI monitoring fuel ratio and the MSD ignition, we "should" be pretty safe I would think. However, does anyone offer a decent forged piston that isn't crazy in price?
Jerry