[68 TT]

Originally Posted by 67ChevyRedneck

...I'm not sure what the bearing conversion kit is for, but the drum spindles don't have any brackets or provisions to mount the disc brake calipers to.

The truck drum brake spindles are of similar design to the first gen F-body & other car spindles with a bolt on steering arm. In the cars GM made bolt on caliper brackets that used one of the steering arm mount bolts and the boss that the wheel cylinders bolt to as the anchor points for the caliper bracket.

The same could be done with the truck drum brake spindles. The down side is that the cost of the fabricated caliper brackets would far exceed the cost of a set of common junkyard square body disc brake spindles with integrated caliper brackets.

Unless you could use a newer less expensive or larger floating rotor on the drum brake bearing hub like the C3 Vette's do it wouldn't be worth the time to fabricate the custom caliper brackets. It is possible a 2000-up Tahoe front or even rear floating rotor may work for this. The fronts are 12" and the rear are 13" but much deeper. Next time I do a brake job on my Tahoe I will yank the rotors and play around a little to see if it can work.