1968 SWB 901 gearbox: which limited slip

[1971 911T]

I have a 901 box from 1968 that has the weird teat-flanges. Which limited slip can work in this mutant box ? Or what are the mods required with the CV/half shafts ?

Thanks

[chris_seven]

Does it look like this:



If it does it must have a ZF LSD designed to suit Nadella Drive Shafts which is surprising in 1968.

If you have this style of diff then you will need an adapter to be able to fit Lobros



Can you take a photograph of your flanges?