They probably looked it up right.

I bet what happened is the guy making $3/hr at the rebuilding factory, wasn't sure which box it went in, so you got the wrong one.

Even if you could make that one work, you wouldn't want to. The early single lead ones didnt have much in the way of output.

In any case, if you ask for one for a newer application you can get up to 78 amps in that same case.

Specify something like an early 80's dodge van with a 318, and a single groove pully alt.