What's The Deal With The Mopar Mini Starters?

Hmm that's odd.
I just put one on my 77 360 works like a charm. Minus the connections being on the wrong side that was a beeoch to hook them up. But now it cranks great. I used one for a 98 ram. I think they are all the same. Im wondering if its something in the 68 being different?
I need to install one on my 77 Powerwagon 886 , this past winter could have used it one moring when it was 14° those have to be better and gearing better versus those older massive starters