904 rebuild

I would talk to VOETOM about this, or better yet, buy his book.
If you look at the pan rail it will havea PK number....that number will tell you what year and where it came from....at PK35xxxxxxx and higher will tell you it is a 72 and newer...
alright thanks for that when this cold snap ends here and I can get it out of the garage and into the shop I will get that info