The best way to do that would be to get the rear cab mount shackles from a '49 and later cab and install them on the earlier cab. Unless you're working on a concours restoration (probably not since you're using an "incorrect" frame wink )


Kevin
1951 Chevy 3100 work truck
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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.