Call a junkyard and ask them how much for a starter from an 88-91 Ram truck or van. Down here at the pull-a-part they are about $20 with a warranty.
Per Dan's repeated assertions the remanufactured units seem to be pretty bad, so wouldn't go that route.
Something Dan did leave off is that from the early 60's through the Denso units, starter speed gradually went up, most likely to mask engines that didn't like to start well when hot.
This my own 318 with a 2095150 starter:
Car issues video outtakes - YouTube
And an '87 318 with likely the original starter:
1987 chrysler 5th ave hole in muffler... DAMNITTT - YouTube
quite a difference, though the '87 is not a denso starter.
