http://car-part.com/
I had exhausted all of the local wheel and tire dealer references looking for factory steel 16x8 8 lugs and was resigned to the fact that I was going to have to expand my search radius..
I had to enter a newer year to find replacements for my 15" 8-lug snap rings but finally found exactly what I was looking for after talking to about a dozen or so vendors from car-part listings.. a homogeneous set of 4 factory white with just the right amount of patina is on the way right now, only drawback is shipping was more than the cost of the wheels.. well worth it for me though since I finally found exactly what I was looking for..
best part of the search though is all of the places willing to email or text pictures, made it a lot easier to decide.. I was finding plenty of wheels in various conditions, colors, widths, etc.. but I held out for exactly what I was looking for and got lucky..
good luck!