Not sure if this is still a discussion anymore....

I stand by what I say in that the thrust load of the M2 bearing is not designed (rated) to handle a sticky WIDE tire with lots of brake on a 3000+ lbs. car. The fact that they are almost identical to the Mopar bearing, only moves my point to include them as well. They were designed for hard compound, narrow 14" or 15" tires, not 18" tires with 300mm + rubber at any where close to 1G load. Same goes for all other period makes.

I know someone will say they been doing it for 30 years, but the tire compounds, coefficient of friction, and widths I'm talking about simply weren't available until just a few years ago.