Just so you know mate, the 180sx is an S13. Wasn't sure if you were aware.
If you do go that route I can say you won't be dissapointed, but I'm sure I could say the same thing for an R32/33. They're a hell of a lot of fun, relatively quick, easy to modify, parts are plentiful, the SR is rock solid (well mine has been) and there is a gamut of information out there on them. Plus they look great in my opinion
There's also not many running around the track days here in Vic, so it's nice to have something a little bit different.
If you've got any questions, or want to check mine out or whatnot, feel free to ask man and I'll do my best to give you any info you need.
I've got a real soft spot for 180SX's. I've now had about 9 cars, including 2 180sx's, and it's my favourite by far.
Dane