Glad to see somebody bring this one up because I have been toying with the same question based on top gear (4th or 5th)ratios for a mostly "street" car...
All the Tremec 5 spds I have seen (which admittedly isn't very many) had final gear ratios which were 1:1 just like the Toploader, so I really never understood what the big pull toward them was (besides strength)... I have a lot of experience with wide ratio Toploaders in a few different cars and they have always seemed to be a really strong and "workable" setup, especially with a good low-end torque motor like the FE's...
If the 5 spd Tremec is available with a lower ratio in 5th, that would be the one that I would (and probably will in my AC) use, otherwise, for me, it will be a wide ratio Toploader...again.
