Sounds like you've done a very thorough job thinking this through Richard. I had to go through all that too, as I really did want to tackle it myself in the beginning. Ended up stumbling over three different items I just couldn't figure out how to overcome, which were the uncrimping/crimping (face and body), injecting the right viscosity & amount of oil and then surfacing and plating the pieces before assembly. Figured the bearing would be an easier item, once found. Anyway, love doing whatever I can myself if there's an economical and prudent method to tackle it. Agree with you completely.
Good luck with whatever you decide nevertheless. It sure is satisfying to get the right one on the car and working & cooling like it did from the factory, let me just say that one to everyone out there, huh? Pretty cool thing...