Mark on ~FB you saw a 4 pin centre from Kam. I have a 24 spline 4 pin built up ready to bolt in 3.5 ratio.
Doh forgot you have later axles. I have a genuine LR 4 pin diff centre from a 4.6 if its anygood to you will need putting into a case. Think its 18mm cross pins.
car looked good too.