Stop in for a cup of coffee

Early 71 and 72 mostly. That one is the blue racing box good to 7500. You can use a 4 pin in a 5 pin application but not a 5 pin in a 4 pin.
I have a Facebook friend I believe needs a correct distributor for a 70 440 six pack 4 speed Challenger. He had his car at a restoration shop in Vegas that went belly up and lost a lot of his parts. I don't know if he's found one yet.