hi stinky, cant really comment too much on the performance of the 5 speed, till i get to drive it again
but for the 3 days i did drive bubbles before the rebuild it was fine 278 diff ratio, 15 inch wheels and if the tacho was correct i think i was on about 1400rpm at around 100kph,basically idiling
they are quite a tough box from what ive heard and a couple of guys have them behind 8's without dramas ( the supras themselves used to pump out a few ponies)
the only issue i have is that if you want to retain the bench the seat will need a small cutout ( as you know) and the standard shifter is a little low to be reached comfortably. i will be making an extension for the shifter/ shaft to bring it higher and easier to reach.
but i have also heard of different boxes having different shifter locations.
you may want to ask some of the ricers if this is true?
i know of a good trimmer who can help out with the mods
dean