The Mini starter question

A mechanic tried a mini starter on my 67 GTS years ago, don't know which one, but it wouldn't fit so stayed with the stock one. So do they not work on on 67 stock GTS?

There are somewhere around 3 different starters.
Some with a longer nose than others.
I pulled mine from a Forest service Ram truck with a 5.2 and it fit my 318 and 5.9 both and I have been running it for 4 years without one problem and I paid 15 bucks for it.
It just kills me to see people blowing money on multi hundred dollar racing suppliers starters.