quick gearbox question

The interchange is '62-6 as a direct replacement part. There are two versions....a bushing version and a bearing version. they will both work but the bearing version is heavier duty. You can also use the '67-72 version but the mounting holes are a little bigger in diameter. Just make sure the bolts are tight or make some small bushings to tighten the clearence between bolt and housing. The '73-up boxes have too big a pitman shaft for the early pitman arm.