It wouldn't be that expensive to machine the pistons/crank. I would do this for about $700 and that would include balancing the crank. It would be up to the end user whether or not it made sense. I think a lot of people relegated to a 318 block could enjoy a medium displacement engine like this as long as they used it for what is intended---economical performance. Make no mistake this is not a race engine--This is a stand in substitute for a 360. J.Rob