T5 Five speed slant six 74 Dart Sport.

I have the Ford motorsport "Z" Box T5 in my Slant 6 / T5 Combo. It has a less deep 1st gear than the "V6 Mustang " T5. I believe the first gear is a 2.91:1 it is a really nice Street and road race box as the ratios are all very tight except for the drop to 5th which is the same as the post listed above, and very similar to the A833 OD Box which has horrendous Gear ratio spacing.

Here is a writeup I did on this swap a few years ago.
To the Original poster - If you plan to turn any RPM, say above 5000-5500 you may want to reconsider that 10" pressure plate, as they can explode.

Good luck with it.