I am assuming based on the math that this build takes a 4.25 inch crank, 1.12 compression height, and rods in the 6.7 inch range. I wasn’t able to find your piston listing, but haven’t tried too hard yet.
4.25 stroke, 6.535 rod, 1.322 C Height. Go to Summit, type in IC 823-040. It has all the specs. That's the piston I like. And yes you are right, it is the 2618 Aluminum Alloy.
