I am on the wet coast in Canada andloking for advice on buying new &/or used 18" wheels. If anyone has advice, I would appreciate it.
TireRack is your friend (mostly).
If you are looking for half decent replicas, check Lakeshore Wheel and Tire. Be SURE to request they ship USPS such that you don't get hit with horrible UPS fees!
Else, check with PMLMotorsports in this forum... if he's around.