I did get it, And meant to reply... sorry...
it's a scrapyard in Benoni... M&M scrapyard is the name....
I also looked into the std 5spd box, and indeed they where close on R1500 more that what I where able to get the W58 box for, so the choice was kind of a no-brainer on that one...
well if you keep the boost down to no more that 9PSI, the std stuff should hold....
I do a lot of towing with mine, and for that I usually crank it up all the way, and then it's hectic on stuff...