Starter motor question

RustyRatRod said
This is not just a problem isolated to the 60 and 61 slant sixes. Matt and I has an original, unmolested 68 Dodge D100 with a 318 and a 904.

Some of those—slant-6s, too—got a Chrysler-built direct-drive starter (also 9-tooth, also 25mm, also incompatible with the gear-reduction starters)