I'm looking for a lift for my 77 F150 and found a new Rancho lift for $200 and thought that it was a good deal. The only problem is that it is for a 78-79 Bronco/F150. What is the difference between that lift and the one for the 77? The only thing I could think of is the rear block. I wasn't sure though. Maybe someone could clear this up for me.

If no one can answer this question then what's the difference in rear suspensions between the 77 F150 and the 78-79 Bronco/F150