I could be getting hold of another f28 gearbox, I know it has already been converted to 2 wheel drive and fitted with a L.S.D. (allegedly). Is there any way of checking whether it DOES have one fitted as the box is already out of the car. Is there anything I could look out for when viewing it or does the gearbox need to be split to expose the diff? If so, what do I look out for to know for sure??