Um, cruise the great western, go onto m4 for a bit go up Springwood twisties, through to windsor then down through blacktown and go to paramatta rd. That would be an example of a typical night cruise for my mates.
On windsor road spotted red r34 GTT turning out of RAAF base, a stock looking maroon red r33 gtst and an r33 GTST with nismo sticker on windscreen heading richmond way. Gave him a wave.
Damn. Oh well can't be right all the time. Good thing someone else said something. Put can you put a 32GTR diff in. I'm sure they are clutch because it's in the parts breakdown.
When you can, check the underside of your car on the left hand side of your diff and look for a sensor that picks up the teeth on the driveshaft. Check the connectors, wiring and the gap between the sensor pickup and teeth.
If that happened to me, I would also tear down the whole engine and rebuild it. The main thing is that nothing else could fail if it is rebuilt properly and new parts installed. I'd go a fresh eng any day, I'd have to save up first though.
A twin plate like an os gikken would be good for it and it would be up to the punisment of clutch dumps, drags, high hp etc.
Got an os gikken tripple plate in the 32 and it drives like a twin, pretty smooth in traffic for what it is too.
Get another diff and check the pre load on when it locks up of get your one rebuilt.
If ya want more lock get em to put in more clutch disks into the stack for more tension (more positive locking).
A guy i know just sold his 32 gts-t and that had a rb25neo conversion with a t04 turbo, etc. He was impressed by power and torque and how he had difficulty getting grip!! Got something like 220kw atw with a cracked piston he did not know about. so he sold it. ALWAYS do a compression test before you go buying a car especially if it's turboed and modified. Could save you money and heartache down the track.
r32 gtst has a mechanical 1.5 way diff. It uses a clutch pack in the diff to limit wheelspin. Over time clutches wear out especially if diff oil is not changed very often.
Some later models like 33 gts-ts used a viscous diff (thick syrupy oil that gets thicker the more you try to move it so it basically locks the diff if one wheel spins.