Okay, back to some tractor stuff. I'm tired of wrapping my transport chains around the front axle. What I'm thinking of doing is weld some grabhooks on my grillgaurd, where it is bolted to the frame. Looks like it's about 1/4" plate, so I feel it'll be strong enough. The question is, should I replace the bolts, 4 on each side, with grade 8? I'm not sure what grade they are right now. I'm not afraid of my welding ability, just the bolts.