The angle strips are likely spot welded to the bed sides. That's the way AD trucks were built, and likely the Task Force as well. It's possible that the bed to frame bolts are short ones with the head up inside the brackets on your first three photos. Normally, they'd extend thru the wood with carriage bolt heads and offset washers. Mar-K offers a wood kit with hidden mounting bolts (see the attached screenshot.)
Why are you wanting to remove the bed or the angle strips?
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.
