I recently tore apart a bronco with full width ford 9 inch and HP Dana 44 with heavy knuckles and caliper brackets with rotors no calipers they have no third members but do have inner axles the rearend has drum brake backing plates those so I can give you drum brake backing plates has 3.5 front coils and rear lift springs with u bolts I have some James James duff traction bars also the radius arms do not come with kit