If you have a box frame this kit is the best no weld option.
You simply drill the hole in the side of the frame that you're working on, insert this fastener into the hole, and while holding the large hex head, tighten the smaller hex head and the bolt will swell up to hold 3000 pounds of sheer force. And since there 8 of them on each flange of the frame it's quite robust when finished.
