The pistons would travel .135" higher and .135" lower in the bores, so it depends how far down they are at TDC with the OEM crank. Could mill the pistons a bit to keep from going above deck. (i.e.: Hoover's Mover 360 using low compression 340 pistons decades ago.) But then you might have issues with piston-to-valve clearance anyway and gotta check crank counterweight-to-piston clearance too. No valve notches. Custom work can get expensive quick. Tom Hoover did the 360 before 360's had many pistons to choose from.
