The limits are either your own skills or how deep your pockets are.
Use the AC? Condensor won't fit in the Bronco. You can probably use the compressor though. Ducts, fan, evaporator, etc depends on the skills of fitting in the dash area.
ABS? Interesting concept. You would have to get tone rings and sensors on all four corners of the Bronco axles, and then fit the ABS unit somewhere. I don't know if somehow you can use the parts off the 94 to 96 Broncos to fit on the earier axles for the tone rings and sensors, if that would even be recognized by the computer.
Brakes...how much of it do you want to use? The electric booster might work. Probably takes some fab work to get it mounted. Pads, calipers, rotors? Only if you swap the axles and independent front suspension too.
Fuel tank doesn't bolt up. However, I've seen people graft the sending units from explorers to Bronco tanks. The fuel guage probably wont work with the F150 sending unit though.
The F150 radio again probably wants to see the F150 ECU at the same time, so that would need some programming work to make it run independently. If you have the Coyote engine and trans along with the ECU, that might work.
I'm guessing the transfer case doesn't fit between the frame rails. Frames can be moved around though. Drive train might also be too long in a short Bronco. Probabaly would have to stretch the wheel base. Early Broncos don't have auto locking hubs on the front axle. The F150 will have some mechanism built into the hub. My 2012 is vacuum operated to engage. Definitely doesn't fit on the Bronco Dana 44.
Nothing is insurmountable, but alot of it just isn't all that practical. Then again, someone has to pioneer all of these new things. My pockets aren't deep enough. My skills get better all the time, but without the cash to buy stuff to practice on, fail, and practice some more...I just buy the stuff I know bolts up that someone else already figured out.
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