R32 Question

[byroncobra]

Hi
I'm under the assumption from the last owner of my car that it has an R32 rear end, however after seeing a post with pics from 400TT that Craigs' appears different to mine particularly where the diff bolts in to the chassis where I have 4 bolts and his 2.
I guess it's not really a big deal only it'd be nice to be sure as I've just ordered new R32 Nolathane bushes for all 4 corners of the rear end as one is completely shot with goop oozing out of it and the others quite perished.
Has anyone else needed to replace these, if so what with? Nissan weren't much help, claiming that they couldn't identify the bushes in their parts list. The Nolathane guys tell me that I need to either cut or burn the old ones out and install their bush in the original steel cup that retains the old one.
The other thing concerning me is the Avo shocky/spring combo doesn't sit centred in the swing arm assembly, in fact on one side the spring actually fouls on it. I have the car suspended on a cradle a few feet off the ground so the suspension is not under compression, is it reasonable to think that once the car's on the ground that the spring will reposition back into the centre of the arm? (it's a bugger to get on and off the cradle so just plonking it on the ground to see is real easy)
Thanks