Brake swap

I have 10 inch brakes on my 74 duster can I take a setup of 9 inch brakes off a 70 dart will it work and what do I need to do to make it work. Wanting the 9 inch on my duster

I believe you would bolt on the 9" spindles & everything outward from there with the 9" setup. The only thing different I could think of is the 70 spindles would have the small upper hole for the early UBJ & not sure if the 74 10" spindles would have the small or the large hole. If the 74 spindle has the small hole it is a bolt in & if it has the large hole Doctor Diff has a sleeve to make up the difference between the smaller tapered ball joint and the larger 74 tapered spindle upper hole. iirc it is a match (both have early small ubj/therefore sleeve not needed

Both '73-up drum and disc used the same upper A with the large upper BJ.

Quote:

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Both '73-up drum and disc used the same upper A with the large upper BJ.

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alright, either purchase a pair of Docs' UBJ spacers (sleeves actually) OR use the '70 UCA's along with the '70 9" drum spindles