I just finished up this project based on info from another thread, it took me about 5 hours to cut, grind, trim and fit the pieces together then I coated it with a flexible bed liner coating.



The end pieces are the factory ends, I just cut them down to fit inside the hollow part of the plastic bumper and bolted them in place. It's a cheap build, I have $14.00 in doing this project, $11.00 of it was for the Dupli-Color Bed Armor and the rest was for the screws to bolt it together.
I cut the bumper 2.25 inches from the edge of the bumper bulge then ground it down to a clean strait edge then I cut the ends that were cut off down to about 5 inches in length and trimmed them on a belt sander until they fit inside the main part of the plastic shell. My bumper was pretty faded so I chose to spray it with the bed liner to finish it off.
The tools I used were:
Sawzall (Borrowed from neighbor) Thanks Al
Angle grinder
Drill
Belt sander
80 and 180 grit sand paper