A coworker that I knew put an 80’s Ford 9” in his ‘72 Bumpside. That truck has the narrower frame, but all he moved was the spring perches. The ‘73+ Dentside trucks have the wider frame. I put a ‘73 Dana 60 rear axle in my old ‘66 and had to move the perches inward. So I believe that anything ‘73 and later should be a direct bolt-in for a Bullnose, but do measure before buying just to be sure. Neither my friend no I did anything with the shock mounts when putting newer axles into the older trucks, so I believe you will be fine in that department, as long as it comes from a truck and not a car or van.
SHORT BED 4-DOOR DIESEL: 1986 F350 4x4 under construction-- 7.3 IDIT ZF5+GVOD
STRAIGHT SIX 4X4: 1981 F150 2wd to 4x4-- 300 I6 close ratio diesel T19, hydroboost brakes, Saginaw steering
BIG F: 1995 F-Superduty under construction— converting to 6.9L IDI diesel ZF5+DNE2
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