There are other options to getting modern disc brakes on early solid axles, maintaining correct tire tread. Top of this(Big Bolt) category, article by Grigg gives full explanation, using ‘90 to ‘01 +- kingpin out spindles on your axle. I have done several, only cost is new kingpin bushings, $12. ea. last job.

Ed
Attachments
IMG_1097.jpeg (264.12 KB, 128 downloads)

Last edited by EdPruss; 11/08/2024 2:10 PM.
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.