manual tach drive distributor

I found one of those distributors in my parts stash last year. It didn't have a tag on it but as far as I could tell it was an old Direct Connection part. I sold it at a swap meet for $100. Guy seemed happy to find it and I was happy to get rid of it. I don't have any use for that old stuff anymore, I've switched over to fuel injection and modern electronics on my stuff. The low deck 470 in my Duster doesn't even have a distributor!