Mark,

Thats R & D's version of a grp'a' diff...it should fit your standard sump but you will need their cross shaft (its a unique cross-shaft to R & D) and some shafts which use 100mm inner lobros to whichever outer (grp 'a' or standard) you use...

The lobro's shown in the pic above would fit on the inner side....

Demon tweeks do sell lobros but they are available a little cheaper....

http://www.demon-tweeks.co.uk/produc...ode=GKNMS3J001

Ian