Originally Posted by coswurv

I agree with what you have said about myself using the standard diff like there stage 1 box, but ive stripped a cts box which was also stage 1 and the only difference i could see is the oversize bearing, so i wont be surprised no, all im saying is there expensive.

Ive built this box to the same specifications as there stage 2 except the diff, oversize mainshaft bearing, modified case, ib5 bearings, all the same, so if i was to use this box in a reasonably modded rs it would do the same job as theres, i belive the atb diffs are around the £400 mark so i was told.