Hey everyone. Over the past few months I have spent countless hours viewing this forum and decided to join. I am moving to Western Australia from the United States and wanted to get some clarification and advice. I saw the sticky here: http://www.skylinesaustralia.com/forums/topic/295752-information-about-vehicle-regulations-licensing-and-the-road-traffic-laws/ and read through it all but am a little concerned after the reading. I am going to be purchasing an R34 GTT (one of my favorite cars, not really legal in the U.S.) and it seems like modification work, in almost any way, shape, or form is illegal and can cause your vehicle to fail Rego. I am not looking to build a race car but want to know what my options are in terms of modifications. I see cars for sale with mods and have to ask, what is feasible and what is not? Exhaust, BOV, upgraded turbo, ECU, Boost controller, Brakes, Sound system, etc. Sorry if this has been covered but I did my best to read through everything on here and the web before posting. Thanks everyone.