Umm...what? Andru, there's heaps of stores around with stuff onshelf...and i don't know about paying 200% more or whatever for one off order...yeah true, they might not have what ur looking for at the time but its never hard to order anything in. the advantage of walking into a showroom like Jack is asking about is, most only require some kind of deposit before they order in (at least in my experience, anyway)...and the added security or them less likely to be able to just pack up their business if they wanted and leave with ur money like u hear so much about internet scammers doing lately. Plus as Jack mentioned before...it's always nice to be able to talk to someone about particular parts in person rather than thru constant emails, etc.
RE Customs, Motorware and Access Autoworks in particular are great places to start. Unfortunately for you, Jack, these are all on the eastside. I'm sure i know of a few around ur area, and if someone doesn't beat me to it, i'll look them up for you and post up what i've found
Justin