Well, if your originals are still good and in spec, I don't really see any benefit to getting new ones. Cruzinimage doesn't even sell 1st oversize pistons. 1st oversize only being 1/4 of a MM, many times that's not enough to clean up the damage or wear in used cylinders. You end up skipping up the the 2nd oversize (.50 or 1/2 MM).