Gonna have a friend who has a machine shop mill my cylinder head down to help out with the compression.

I cant find out anywhere, whats a safe amount that can be milled?

I dont know if .010, .020, .030, .040...etc will work...

Just trying to get it figured out. Im not worried about piston to valve clearance as the pistons have the 13.1cc dish. Shoudnt be any issues there at all.

Only thing would be the pushrods, I would have to find some shorter ones , or shim the rockers the right amount.