True???

And this guy makes the point that you have to answer:

Why would cash-strapped mid-70's Chrysler spend money engineering, and re-tooling for new spindles if what they had worked for the new applications?

Interchanges, by definition, work both ways, but if the A/E spindle wouldn't work on FMJ or B/R that should tell you something....

From the source that did it first, who actually chums around with Chrysler engineers, AND consistently turns out good tech:
http://www.moparaction.com/Tech/archive/disc-main.html

Funny because the facts are that all of the negatives Rick spoke of have been proven to be false. I like Rick. He's a good guy. But he wrote that article literally in the dawn of doing the FMJ swaps. There was no long term testing as of yet. Now there has been and it won't hurt a thing. There are so many vehicles now running around with the "wrong" spindles in your opinion, so why haven't we seen more failures? We haven't because there are none that can be attributed directly to the spindles.