A-Body leaf spring bushing challenge.

UPDATE / CONCLUSION
RockAuto was able to promptly help with my old orders. The ones that I initially ordered were Raybestos 5765012. I subsequently returned them, probably since the spec on them shows a 2"OD but again those were the ones listed (incorrectly) for my application.
That is the time that I would have bought the ones that I pressed-in, which were the useless ones with the knurls, but I can't find any record of what brand/number they were. I will update one more time if I find it.

WRONG BUSHINGS:
Raybestos 5765012 2"OD
AC Delco 45G17011 1 3/8" OD
AC Delco 45G17012 2" OD
NAPA NCP2748166 1 3/8" OD (per the spec, I did not order this one)
NAPA NCP2748171 2"OD (probably, since like with all other aftermarkets this is the same one listed for E-bodies, etc)

DON'T BOTHER WITH ANYTHING OTHER THAN RB109's. This is a universal "rubber bushing" listing available from a lot of places, maybe even a local spring shop. Per "HotRod's" advice I used Eaton Detroit Spring. The guy was nice and he shipped them right-away as-promised. These are the correct bushings for my application. 1.5" OD, .500" ID. You will probably have to order bolts/nuts separately. I was not crazy about the bolts he sent since they are coarse thread so the "correct" 6023019 nuts won't fit, but I'm certainly not going to let that hold me up any longer.

Remember all of this pertains to 1970-1971 "A-Body" cars. The RB109 is the only aftermarket I found after 2 weeks that will work with no modifications. According to the Chrysler parts manual, this is regardless of engine size. My disclaimer is that It's always possible that the book is wrong and that the 6cyl actually does use the 1 3/8" bushing, but I'm just guessing. I was a Chrysler parts man for many years. The books were never updated. It would have been up to a good parts guy to pencil-in any corrections, and my pdf of the book has no such changes in this case.

I hope that this information will help other guys in the future.

The attached photo is of the inner diameter tube/sleeve from the 1st set of bushings that I pressed-in that first started all of this mystery. Looking closely you will see at the far end of the tube the 3 "knurl" things that prevented a 5/8" bolt (which was probably included with the bushings) from working with them.

Now after all this I've lost the window of time to work on the car for another week or so (big sigh)