Mopar 8 3/4 or Ford 9?

8.8 ford Explorer/Ranger is a c-clip axle. I don't know if those brakes would bolt up to the 9" stuff, but maybe.

You should be able to have Moser or Strange make up axles whatever way you need. I'd just run the 9" ends and get 9" ford rear brakes. The 8.75 is ok stuff too, but why make extra hassle for yourself?

the 9" is the standard rear end in hot-rod buildups parts are more readily available and often cheaper for it than the 8-3/4.

Good luck

Steve