The Holley 20-37 doesn't even come close. Shaft diameter is notably bigger than the throttle cable holes:
That, and it's a VERY loose fit - the threaded end has no business in a hole this size.
I saw more than one source advertising this piece for "GM," and I'm about ready to believe this shaft has NOTHING to do with Mopar applications at all.
I put the previous Mopar shaft on it for the moment. It works as is, but I don't like it. We'll see.
I've hardly seen 10 Ramchargers in town, much less in the scrapyard. I should have taken every single one of the 15x7" rims off that van when I could have done so.