In addition, check out Line2Line coatings. If you rebuild in the future, you can coat the piston skirts to build them back up to desired size. I had a 550 cube bigblock set of pistons done to take up . 0043 that the bores grew from rehones, scratch cleanup. This was a high end build, made 926 hp. L2L says the coating is applied about . 0025 thicker than needed, and wears in during a breaking procedure they lay out. They can coat pistons to . 020 oversize! Which means you can reuse your current block many times.
The coating cost me $300.