If you need numbers matching, look on Ebay. For some reason, the cougar parts market seems to be drying up, and now everything is through the roof expensive. If, however you just want something that works correctly, they are available from every parts store. Or online at rock auto. I need a numbers matching for my 70/C- but I'm not ready to fork up 400 for it. I'll keep looking. Also, the only difference for a C VS a W, is the diameter of the gear- so if you are OK swapping it out, that may be a solution for you to look at as well....https://www.enginebuildermag.com/2009/03/identifying-distributors-on-ford-351-engines/