Welcome Dinga, good to see another Penrith lad on the forums.
I've got an August 2000 build XR6 HP. I've had no diff worries so far, but with the IRS you might come across them. They may have had the fix done already, but monitor it anyway.
Otherwise, the VCT is a good car. The 4.0l engine has standard things to check and look out for like rocker cover leaks (look for oil around the top of the engine), head gasket leaks (coolant loss is a typical sign), but you probably won't see these during the warranty period.
If you're planning to go crazy with mods, the VCT isn't the preferred version of the AU Intech 4.0ls. But stock, it's a smoother, slightly better revving engine than the HP.
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