i went 2 a place called lynx that imported them 4 me, im not sure bout places up ur way... google is ur friend lol ... the only thing i found is that they were alot more reliable than other brands n they fixed up all of the ignition trouble i had like misfiring
best possible thing u can do exhaust wise is to get rid of any restrictions u can that are blocking exhaust gases, eg. mufflers, hot dogs, cats etc... Only problem is doing this will make ur car very much illegal
what u will be best doin is a full 2.5" exhaust including extractors (3" u will loose alot of low end power)... its up 2 u with stainless or mild steel, i did mild as it was cheaper n made a much betta sound ... put a hi flo cat in it (dont gut the cat lol)... a hi flo muffler with a nice big single or twin tip... that way it should be putting out about 90db which in nsw is legal, dunno bout qld tho... only trouble i found is that sitting on 3k revs it dronnnnnnnnnnnnnnnnnnnned lol
Pod i would sell n leave the stock airbox n snorkle on it with a good K&N panel filter
N/As cost alot to get any big power gains! i would personally just do a nice simple cat back n work on suspension n handling