I went with 7/7/3 for the diffs, I will see how that goes and work from there.
And 40wt all round for the shocks.
I have read that with the centre spider diff's add about 2k thickness onto what ever weight you
are putting in. Something about the extra 2 gears adding more resistance.
For example if you want your spider diff to be 10K in thickness then put 8k in.
Anyone else know about this theory?