Here is a pic with the RTV dry, other than the bolts, you can hardly tell where it is. I have a can of bedliner to go over it to keep it quiet and secure.
All you need to do this job is an angle grinder or circular saw and the cutoff wheels, some self tapping screws, a few 1"x 1/4" nuts and bolts with lock washers, and about 18" of 1" wide 1/8" thick steel bar, RTV and paint to suit. The bars run fore to aft and are held in place by the 1/4" bolts. Very easy project to do.