Your 1953 3600 should have caster shims according to the parts manual. But if the caster angle checks out OK, then they wouldn't be needed. I suspect they will be needed. Your alignment shop can tell you, but they probably won't have any on hand.
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.