What gearbox can I use for this purpose? Can the standard zetec gearboxes handle this? I have seen the IB5 from the fiesta and MTX75 on ebay. Just wanted to know alittle bit more about the boxes. Cheers

MTX is stronger but ib5 will take that power too

you also have the 6 speed getrag unit from the st170 or find a focus rs box that will have a quaife diff in there are standard

if you go go ib5 you can fit a s2 rs turbo lsd diff in there with a little modding

Thanks