The z drifts great but the standard VLSD can be quite unpredictable and cause a spin or crash, I know I've done it a few times lol. Like stevo says don't drift on the road, we used to got out late at night doing it until I ended up rolling my z. I was lucky to walk away from it when u seen what happened. Apparanyly the cases on the diff can crack with a welded diff but I've also heard of guys running them for years with no problems. Mine is getting welded next week so il see how I get on. Also tein tie rods are a good upgrade for a bit more lock. Things like coilovers and poly bushes all help but not essential. I was drifting in a z with standard setup 2 weeks ago and was surprised at just how good it was after driving a heavily modified one for so long