Gauging interest in 13" rotor mustang caliper brackets

It does look like a '72 and older A-Body drum spindle will accept a B-Body drum hub. Both appear to use a SET6 inner bearing and a SET2 outer (Timken), so as long as the pin is the same length this would work.

But the '73+ cars (all of them) would need to swap to the older spindle to use this kit. Unless I missed something. And don't forget this also means swapping to the smaller UBJ, or boring the spindle to fit the larger one.

There is the option of "making" a drum hub by sectioning the rotor off a stock hub. No idea if the offset is ok though.

Edit - Maybe the easiest option is to re-drill the A-Body drum hubs to 5x4.5. I forget about that option as I think the 8.75" axle flange is too small to do that comfortably. No idea if the front hub flange is bigger, but if it is it might be the best option.