Jim,
Welcome back to "mundane world". Too bad the good stuff has to end.
A six speed with 3:73s sounds sweet. What would be the 5th and 6th gear ratios?
I have 3:73s with a .64 5th gear. It's nice when cruising at 75 or 80 MPH but not so nice around town when I'm forced to hunt for the right gear in traffic.
I often think that a .82 5th would have been better.
To rebuild or buy new... that is the question. My only input is that I love new stuff.