Looking @ the parts fiche the part numbers are the same for 2wd & 4wd F100 radius arms & brackets, #3A360 for arm & #3B095 for brackets. Does the Early Bronco's ('66-'77) also use the same radius arm and bracket? I do seem to find they all use the same bushings....
http://www.fordification.com/tech/im...s/ibeams04.jpg
http://www.fordification.com/tech/im...ff-front06.jpg

 

The basic part numbers shown in parts catalog illustrations are the same for ALL radius arms and brackets for ALL year trucks.

What makes the differences are the prefixes and suffixes listed in the text section that define what the parts fit.

1966/77 Bronco's use the same radius arms (C6TZ-3A360-A) as 1966/74 F100 4WD, but the brackets are different.

Pic: Scroll down to 3A360 radius arm bracket applications:

 

Good to have the clarity. So the 1966/77 Bronco's use the same radius arms (C6TZ-3A360-A) as 1966/74*F100*4WD, yet the brackets are different. And the 2wd F100 Radius arms and brackets are different than either 4wd's, correct?

What I'm trying to do is get more Caster, longer radius arms or at least less angle with longer brackets to get more stability at hiway speeds. My 2wd Truck has been lifted. I now know the 4wd truck and Bronco's use the same arms, hoping I could install a longer 4wd aftermarket radius arm.

 

ALL Ford basic part numbers shown in pics are the same for all vehicles.

For example, every hood is 16612, every right fender is 16005, every grille is 8200, every tail light lens is 13450, every camshaft is 6250.

The text section is required to get the apropos prefix and suffix to add to the basic part number for the application.

 

Yes Sir, I understand that the correct Prefixes as well as the Suffix added to the base part number will then give you absolute application.

Got it, C5TZ-3A360-A for 2wd.

Had to get on a bigger screen to see part numbers clearly.

 

4wd radius arms are completely different from 2wd. You might try to fabricate some longer ones using the stamped arms of 80-96 2wd's. Or you can get longer ones from Autofab.