88-94 2wd f150
you want the 2wd because the spring is 2.5 in wide and the 4wd is 3in wide.
try and find a set out of a single cab because the ext cab ones have 4 leaves plus overload and i think that would be too much.
i just got my f150s out of an ext cab but im going to remove one of the leafs and possibly the overload. i have a bobbed bed with little weight so i dont want it too stiff.