first thing that confuses me with your post is, you have a 01 sport, and you want to change the front end to a 01 sport???? i also want to ask when you say front end are you talking about the sheet metal, or diffs?
you will have to find out one thing about your truck. they had job 1 and job 2 in 01. which means if you have the job 1, you can use the electrical from a 99-01 5L which will make your swap pretty much just a plug and play. if its a job 2, you will fact a lot of wire issues and will need to get yourself a ford service cd for your wiring (i know there is more to it then just this, but this is what i can remember at the moment).
you will also want to get a donor truck just so your not running back and forth to the wrecker.
your also going to need to find a f150 that is a 4x4 and had a 5sp (i believe 96-03 or 02) and while your at it, you might as well swap t cases for the 4406 manual as well.
if your talking about doing a 5 speed swap first, a 4L 5sp will not bolt to the 5L motor. i am not sure how much research you have done on this yet, but if you havent, you need to. im not going to say its easy or hard, but there is a lot of parts your going to have to find before you can even think about doing these swaps.