I installed one recently. It wasn't a poison sprider, it was a teraflex, but I had to drill the hole too. I just bolted it all up, marked the spot where the hole needed to be, took it off, drilled the hole and used the self tapping screw (a big one) a reinstaled it. Worked great. Don't do what I did though, I drilled the hole a little bigger than I was suppose to (didn't have the right size bit, oops) and had to run to the parts store for a little bigger self tapper. You really shouldn't have any problem. It's super easy. That bolt does go into that tubular cross member. Also, while you're drilling out that hole...use some eye protection. I won't go into why I'm suggesting that one, let's just say experience. I don't know about the nut and wrench inside the frame. Mine only has 3 bolts: 2 existing bolts and the one I had to drill.