Ford F150 - 5.0 vs modified 4.0 for a lifted 99 4X4

Im intrested in doing engine work to a 99 Ranger 4X4. The truck already has a 3in Pro Comp suspension lift and 33x10.50 tires, and a 4.10 rear end. Im intrested in doing some engine work and have been considering a 5.0 swap but have heard of guys just putting a supercharger on the 4.0 to get a similiar amount of torque and hp. This truck is used for mild off-roading and as a daily driver so reliablity is key. Looking for suggestions as to which would be better and more reliable.

see my posting in the V6 section under horsepower, there is more options that are much easier.

Since reliability is important, I would just leave the engine stock. The 4.0 should have plenty of power for mild off-roading with the 33s and 4.10 gears.