I was studying over some of the Eastern Beaver stuff for some upcoming wiring plans. Those connectors and pins on Eastern Beaver that I think you're referring to are Sumitomo Sealed MT brand. Here’s a link to the
Catalog. There’s an outfit called
Ballenger Motorsports that appears to be an online distributor of Sumitomo Electronics, but they have their own part numbers. Perhaps a call or email and they could get you the pins since you have the rest of the connectors. Doesn't look like they have a minimum like EB. Good luck!