904 rebuild question?

So I dropped the 904 off last weekend. As it turns out the guy who does my t-shirts for my jeep group turned me on to his father who has a long history in the racing world. His name is Skip Hartwig evidentally he raced in the 60/70's out on Arizona and after that raced dirt track for jeep. It was a real pleasure to spend some time in his shop looking at his creations and listning to his storys. I should have it back next week and the price was more than resonable. I'm always happy to get a hook up but it's meeting new people and sharing their storys that make it so cool to be a part of all of this!!