Thanks for your quick responses!
L18_B110...
Yeah the wheels do kind up jump up and down like axel tramp, but no sign of any wheelspin. I'll check out the leafs and gearbox mount cos they sound the most likely, the shocks are good and so are the unis.
rgrinder ...
No I'm sure it isnt the clutch, I drove the car around the yard while my friend hung upside down out of the back window and looked under the car;
theres definitely something wrong futher down the driveline.
I'll have a look next time I see the car.