Need help with Insane 340 setup.

Yeah I was blown away when I opened it up.

I have 2 choices right now, I know where to get a set of used (barely) TRW 2316's which is a flat top with valve reliefs that are soposidly 10.34 with 63cc heads or another guy has a set of the same 2322 pistons for sale that I have in the motor which are a 13:1 in stock form, but hes willing to mill them down for free and says I can get them down to the same as the 2316's. I know the 2322 s at .030 fit great in the motor as theres no bore ware that I can see and I dont know if the newer 2316's have the same piston to bore specs. But either way it looks like they will be quite a bit lighter and will require the setup to be reballanced. Would like to be able to just hone the block and drop in some replacement pistons. Any thoughts?

Butch