Gearbox failure

[miles]

Cable's are dead simple, all of the 406 stuff fits and if anything free's up more room, the box's handle allot more than a BE, look at all the HDI's running them in various M varients with anything from 300nm of torque upwards, mines running 395nm without any issues at all, but how much space etc is taken up by the turbo and box size is impossible to tell, whats the ratings on the quaife stuff?