I used a Prothane Total Kit for z31, thou it did not have the rear subframe bushes, and the ARB bushings didint fit at all (there was basicly any size except 25mm in the kit but
, and i can cofirm that both the front ant the rear ARB's are 25mm), everything else fit just fine.
Then i bought the subframe bushes seperately from MMR
http://www.mmr-direct.com/. I also bought the front control arm bushes from them, because i didint like how the z31 ones fit (you have to remove the outer metal liner (or whatever you call that thing
).