Although I'm still stuck with 2.73's I've been having the same debate in my own head. However I have talked to and riden with several people who have 3.73 gears. As a passenger I didn't notice anything wrong with the 3.73's, no real high reving.
Since you car is not a daily driver (unless you spend a lot of time on the highway), I would recommend you go with 3.73's.
What do you have to lose going with 3.73's?...Performance...
------------------
1995 Mustang GT