Weather guard and delta pro make good toolboxes. The j hooks work well for installation. My current box is attached into the stake front stake pockets using the hardware from my cab guard. It makes for a very solid mount.
2011 GMC 2500HD
Toro and Exmark Mowers
Echo, Shindy and Jonsered 2 Strokes
Carry On Utility Trailer/ Bri-Mar Dump Trailer
Billy Goat, Little Wonder, Bluebird, and Ryan Equipment
Lesco Application Equipment
Tons of Barrels, Rakes, Gas Cans and Other Junk