360 11.5:1 pistons

Yep, the dome will for W5’s. You just have to mill the quench pad down to zero deck if you had it above the deck to start with.

I should have mentioned that you have to make sure that you understand when you mill that quench pad off you are effectively putting the dome that many thousandths into the chamber. That raises the compression quite a bit.

I know because I was shooting for 13.5:1 and milled .020 off the pad and ended up at 14.8 or something.
You gonna run methanol?