I believe its the Bendix which will take a thicker pad but is identical in every other dimension to the ATE, so the thinner pad for the ATE will fit either caliper but the thicker Bendix pad won't fit the ATE.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.