I am working on a carrier built out of 3/16ths 2" square tube. My thought is to sleave a 1 inch grade 8 bolt with DOM. Weld a piece of the DOM into the main bumper and the carrier. Since it won't be opened that often, a lttle grease on the bolt should do. Anyone done this? Anyone know the shear strength of a 1 inch grde 8? Would a grade 5 be better (less brittle)? Any drawbacks?