After two weeks at the sand blast shop, I finally got the frame back. It looks really good! I applied two coats of POR-15 (pictures to follow). Once all the rust was removed I uncovered the original serial number from the frame (101295). This tells me the frame is from 1955 if it's a true CJ5 frame. It can be from another early CJ from another year but I don't know how to verify its a true CJ5 frame. I also uncovered the engine serial number while disassembling the engine. It is 800885. That number is a 1958 CJ5. Any ideas on why there is a difference in serial numbers? I've been trying to figure out this jeeps true birth year for over a year.