You could check the spring specs on the vehicle info kit for each year and compare. I do know that AD trucks have 8 leaf rear springs as well, but you'd have to check the specs. Here's the link to the Vehicle Info Kit page (which just moved in the last day or so): Link


Kevin
1951 Chevy 3100 work truck
Follow this saga in Project Journal
Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.