The door skins themselves can be made to fit, but only with some modifications to the dash. The VR/VS ones have air vents on the door.
It's possible to fit just the speaker pods though, they will house most 6" speakers without too many problems, and with a little bit of extra work they can give a 6.5" speaker a good home too :)
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006)
Nope they just screwed in takes a bit of time, just make sure you have left enough room for the window winders. You said u were in Adelaide yeah? if your in the south then go to Advanced Auto Salvage at Lonsdale. they r quite good. don't have the number on me but it's in the pages i think they will be about 80 bucks with speakers wich is pritty good when you look around.