The '63 to '87 front suspension are all essentially the same design and while the discussion is usually limited to the disk brake versions they are all very similar.

Even when the crossmember is narrowed to fit the frame the track is really to wide.

Another things to note about this approach is that it does NOT lower the truck. To get the truck lower using this approach would require drop spindles or modified A-arms.

I'm considering using this approach on one of my projects but in my case the wider track is a plus not a minus.

I'm planning to use dually type wheels on this particular truck, and may need spacers to get the wheels out far enough even with the wider track. My project isn't typical of what most people are trying to accomplish.

1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble...