Parts Haulers (Pickups)

I've been using my old 94' ford F150 to haul my junker around. Has the 5.7L motor and 3:55 gears. I did put some overload springs on it which helped with the load handling. I've done a few 300 mile round trips loaded with it and it does alright - but I can also see where a heavier truck with more torque would be better. Trouble is I just can't get myself to part with the old girl after 17 years.... :)