Ok, a couple of things that may help. IF you want to do a 5.0 swap, do it right. In many states, you have to swap in an engine of the same year or newer than the vehicle. You will also have to swap all emissions equipment that came with that engine, even if the engine doesn't have to be newer.
Stick with the Fuel injection, you will get better driveability, better fuel economy, it will work much better off-road, and will end up costing you the same, or less than changing a fuel injected motor to a carburator. If you were to swap the fuel injection to a carb, you will need a good carb ($300-400), an intake manifold ($200), and you should change the cam, since it was designed for fuel injection. You will also want to change to a low pressure in-line carb pump...... instead of the high pressure intank pump.
To stick with FI, you will want to be present at the removal of the engine, or do it yourself. This makes things much easier. You will need the computer, and the computer harness. You will also need the entire engine harness, including O2 harness and tranny harness. You will want to take pictures of the engine in the donor vehicle from various angles to show how everything mounts in the engine bay. You will want to mark all sensors, and plugs, and put baggies over them. Things like this will make the conversion much easier.
You will want to get the tranny that came with the engine. If it is a manual, and you want an automatic, you will need to trade in your computer for an automatic one (different calibration). This is not expensive...... about $150. You will also need the different flywheel. It is easiest to get the auto tranny for the year of your engine so that the calibrations match. It would also probably be easier to get the full size tcase. This will require the tcase adapter if the donor tranny was not out of a 4wd. You will probably also have to have your driveshafts modified...... as well as the tranny mount may be different (can use a 5.0 Explorer mount).
The most time consuming part of this conversion is mating your body harness to the engine harness. A good wiring diagram for both is a necessity. Take your time, and do it right. Not hard...... just slow going.
Hope this was helpful.
Gloria
93 EB Explorer (highly modified)
94 F150 Lightning
[This message has been edited by Extreme4x4 (edited 02-14-2000).]