I would love to hear about how you get on with this, the internals are one thing and can be machined from scratch in much stronger materials and then treated for even more strength but how are you going to beef up the gearbox casings, I have seen them fail with a lot less than 300hp running through them.
Ok...so I've got good and bad news. I can get the diff and gear set made but the Achilles heal of the standard box is the pinion gear

The box isn't big enough to use a larger one or at least one big enough for what i need.
So for now its back to the drawing board...
I have another option I'm looking into atm so i'll keep you posted. I'm not going to let this spead hump spoil the dream
