On a 42-47 Ford pickup, has anybody used the disc brake conversion with sids 3” drop axle and dropped steering arms? The kit states doesn’t work with forged aftermarket arms, but doesnt say anything about dropped factory arms.
I'd have to know exactly what kit it is but am thinking that the caliper brackets want to take up the same space as the aftermarket dropped arms and that is why that doesn't work. Looking at this add I am thinking that there is a clearance issue with forged aftermarket steering arms.https://www.performanceonline.com/1937-47-FORD-TRUCK-FRONT-DISC-BRAKE-CONVERSION-KIT-5-LUG/
I think you are referring to the Speedway kit, and yes, the bracket mounts on the back of the spindle, so the aftermarket arms cannot attach there too.