fuel sender connector?
 

I need a part number for a fuel sending unit wire connector for a 1978 blazer or its equivalent. I put one of these tanks in my 65 but it didnt have the push on electrical cap for the sender wire at the sender, if that makes sense. My local Napa store cant seem to find what Im looking for in there books. So if anyone has any idea for a part number, that would be extremely helpful. Thanks...Roy