Carefully, cleanly, with the proper tools.
it shold
Mercron / Dextron III
the manual trans should be dexIII auto fluid, sounds wrong but isnt, the auto trans i would think the same but not 100% on that
Probably 32 gallon
Dealership can tell you. There's a good chance you have the C6 transmission.
drop the transmission pan and change the fluid and trans filter
If the F-150 has the Ford E4OD transmission, then yes, it will fit into the Ford Bronco. If it has the E6 automatic, however, you may have some issues.
Will probably have to go to an auto sound place and get a wiring adapter for the electricals.
Internal clutch pack might be worn. There might be a problem with the auto-trans "valve body", the filter might be plugged, but if that's the case the trans is through anyway. The torque converter is bad or the intire trans is bad
you've gotta drop the tank. Make sure it's empty. I mean bone dry.
Chiltons auto manuals have good diagrams, your oxygen sensor is on your exhaust in front of the catalytic converter.
10 degrees BTC(Before Top Dead Center) for both auto and manual trans. Idle 700RPM for manual and 650 RPM for auto trans