Ok...I have been looking at the same websites for years when it comes to buying parts for my projects. I know that there are many sites out there offering parts for early Chevys.. (1947) So, what are they? (Not Chevs of the 40's)
Rock Auto seems to have a pretty extensive array of parts for any make and model vehicle . They carry parts for my 1950 International, mainly mechanical parts. http://www.rockauto.com/
nobody mentioned the www.jalopyjournal.com ............. LOL LOL But on the right track................. www.speedwaymotors.com www.rodnrace.net and craigslist............. LOL