In my opinion you won't find one for purchase that is very sturdy. You know what you want, so go to a local welding shop and get them to give you a price. You might be surprised. I was. When I get a new 5ver I take off the weak OEM bumper, buy some 4x4x1/8 square tubing and whatever else the welder needs and have him weld it up to the frame. And it's cheaper than you think, at least around my area. Just an idea for you to ponder.
Scott and Liz - Southern NM
2012 Wildcat Sterling 32RL - w/level up (best option ever)
2007 Chevy 2500HD 4dr short bed Duramax w/allison
Reese Fifth Airborne air ride king pin coupler with Sidewinder