I have a 79 351 modified Manual 4 speed with factory quad shock setup. I met a guy this weekend that seemed to know alot about trucks and he told me that the older broncos came stock with either D44's or D60's. He said that if my bronco came with the factory quad shock setup then I had D60's in the front and back. He said that the quad shock setup ment that the bronco was equipped with a towing package and therefore had D60's. Is this True??? If not, can someone tell me how I can figure out what axils are under my rig.