It should have another bracket toward the left side where the row of holes are. I just posted a photo of that bracket for another member here.
Just looking at the FAM for various models and it looks like that bracket is only used on the 1 ton and larger trucks, but not the 1/2 and 3/4 tons. So you (and I) have all the pieces needed for 3100's. The strap across the bottom is the same for both big and little bolts.

Last edited by klhansen; 06/11/2019 1:12 AM.
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.