Had a look at the pulsar, had sparkles through the paint No go there.
As for intercooler, as i said in the other post, i dont think there is a huge difference in them, i'd stick with a brand name just to be safe. Theres 2 types but according to hot 4's they're not really different. As for size, 600x300x15 is the norm most of the time, im pretty sure its 15. Can pick them up from a few places, auto bahn, stupid cheap, repco... never bought one but shouldnt be hard to find one. I live up here in Darwin, i'd recommend getting into contact with High-Tech tuning, he seems to be the guy for skylines up here.
Zac