I put an old hitch on my F350 and was wondering if the two single bolts through the bottom of the frame are strong enough? I'm always paranoid of things breaking... and don't want these bolts to snap. I used 1/2" grade 8 bolts in all locations and used some 3/8"x2" steel on the top of the frame for extra support. There is 1 bolt at each side through the bottom of the frame, then the hitch runs up to another cross piece that is held on with a bracket with a couple more bolts. The hitch says 1,000 lbs tounge/10,000 trailer weight, and I think it says Class V also. So how much force would it take to snap the two bolts at the rear of the frame? Would it just rip the frame before they break?