OK... slightly different aplication here...
FWD cars...
I looked on Gearboxman's site... saw three options.
1. Quaife (but I don't like the idea of the wheel off the ground having more drive sent to it

)
2. Gripper
3. Tran-x.
Now the tran-x one looks adjustable in some ways? Am I right on that?
How often will a Tran-x diff need rebuilding over say the Gripper diff?
Cheers guys!