These where in a pile of parts that came with my 72 cuda when I bought it. Do I have to pull the rotors off to find casting numbers on the spindles? The discs are 11 3/4" and bolt patter is 5x4.5. Is this an a body setup?

Take some measurements

another pic

Looks like B-body but could be C-body. A-body never came with 11.75 rotors nor did they ever have a lower ball joint like that.

Width of the rotor will tell you if it is B or C. Or pull the rotors off and look at the wheel bearings. The B body knuckles fit on ABE cars but you'll need to change the calipers.

Cordoba set up? Not e-body also because steering arm holds the ball joint pin not the ball joint itself. Unless it has been cut off?

I made this if it helps?

Isn't '72 the last year for "pin" calipers on B & E-bodies. What did the c-bodies use?

Those are mid '70s B-body 10.95" brakes.

Thanks guys, So I take it none of these parts would work on a 1972 cuda,except for maybe the splash shields? I also have a 1968 road runner would any of this stuff work on that?

The brakes will fit your Barracuda and Road Runner. You just re-use your original lower ball joints.

Those calipers aren't the best choice to use. But they look like cores anyway so just swap them for some late model FMJ calipers which are designed to be rear hung and you should be set.

To change those pin style calipers to the late model FMJ rear hung calipers, you will need to change the caliper adapter that bolts to the spindle, and get the slider calipers for the FMJ . . .