hey, jus a reply to the fault with the clicking noise from the rear axle. ive jus picked up my new 350z (well new to me but a 54 plate. and i have the same fault. i have a friend who works for nissan and told me its a common fault wit 350's. the fault is wit the driveshaft, one or 2 of the splines wear out, so u have to remove the driveshaft from the rear, which is about 6 or 8 bolts and also the hub nut, turn the driveshaft 180 degrees and then put it back in. it should be ok then. hope this helps?