Did all 1-ton 67-72 models have a spacer on the rear axle to allow 16 in dual wheels to work on the larger drums?

http://i305.photobucket.com/albums/nn214/jfnar/57%20chevy%203800/DSCF1146.jpg

This is a photo that jfnar had posted when I had asked about the best way to convert a '59 1-ton to duals.

How similar are the front wheels/hubs on 67-72 to what would have been on a 59 dually 1-ton?

Just wondering how common these rear wheel spacers are. I'm finding that 19.5 wheels and rims are somewhat scarce, and that it's a lot easier to find 16 in. dually rims.

Last edited by Kerwin; 11/26/2011 11:36 PM.

1959 Chevrolet 3800 Pickup
1937 Chevrolet GC Panel
Can you still call it a barn find if it's your barn?