The 67-72 a body's all had small ball joint as far as I know. Just that some are disk, some drum.
I did wheel stands with my old car for years, ( raced it a lot) with no issuers ever. 70 Duster wth disk brake spindles.
I ended up using aerospace disk brakes, as I believe Willwood doesn't offer a kit for those, just the drum type like you have.
At any rate, aerospace demanded i send them my spindles( because people often don't have what they think they have,and they mount the correct caliper brackets for you)
I liked the brakes and recommend this avenue of approach.
Measure twice, cut once

Last edited by B3422W5; 10/04/14 03:04 PM.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8