I know this is an older post... but wanted to add to my experience. After identifying the same with this tread, Thank You!, I found a clutch head driver set at the Tri-State Car Parts Swap meet in Denver. $12.00 It worked in removing only 5 of the bolts on the bed. The bolts stripped out even with a solid fit. I had to drill the rest out. It worked and did not take to long. I will replace them with a hex head or equivalent. Not a fan the clutch head.
