Similar story as Helbing, I'm from Canada and back in the mid-late 80's I would still go to the dealership for some items, Year One got a lot of my money and I still have the Rallye rims I bought at MCO Motor City Originals, even used to get a printed list of parts mailed to me from Brad's NOS.

Magazine subscriptions and the forums have lead me to various vendors and I now directly buy from Mega Parts, Dante's, Bill Rolick, etc.