Hi, I recently bought a 2000 F150 with 14000 on it. I find the power to be plentiful. I just got rid of a 1994 Ranger with 98 HP.
I found a site that will have just about everything you will need to gain up to 80 HP more out of you 4.2L.

I plan on boosting my HP up a little once my warrentee is up.

Erick