A friend of mine got a JVC head unit from Cronulla Car Sound but we installed it ourselves. He got a good price though (can't remember what it was now, too long ago).
Went there once while the guy was working on a JVC sponsored Toyota Supra, all very nicely kitted out. The sound system wasn't running when I saw it though, but all the speakers were in place, all with custom fibreglassing etc, looked very tidy. The guy was very friendly and certainly knew what he was talking about.