5 speed gear box. $600 From Australian delivered NA 300ZX. Easy, smooth changes, every gear. No crunching - in any gear - and that's with normal gearbox oil (ie not even Redline oil). No oil leaks. Will even throw in clutch that didn't really need replacing. 0419 809 120 - ask for John - or text me and I'll call you back. I'm in Perth and freight's easy to arrange.