The pads on the Cobra are thinner due to the thicker rotor. They are just GT/V6 pads shaved down a bit. Worn GT pads will fit fine.
The U=shaped bracket that holds the pads and the caliper bolts to is different. On the Cobra it is connected in front for more strenght and has a wider slot for the thicker CObra rotor. The Gt/V6 bracket can just be grinded slightly wider. Not much to really take off.
And of course, the axle brackets, rotors and anti-moans are different. Dust shields are the same