I plan to bore the block oversize and install lower compression pistons. Along the way I want to machine the block to accept the diesel engine piston oil sprayers as well as modify the oil pump drive and possibly the pump. If I can locate a diesel crankshaft on the cheap I might swap for more displacement. So far no luck. I'm thinking about thermal barrier coating the piston crowns and moly coating the skirts so that this shortblock can take whatever I throw at it. After that it will just be a matter of how much fuel I can deliver and what the driveline will take.