I just removed a hitch from a Jeep with great difficulty. The grade 10.9 bolts were eroded away to nothingness since they are right in the rear wheel well splash zone. Winter salt got in and just wasted the bolts as well as the hitch. I have a new CURT hitch coming. I know I should use 10.9 or grade 8 bolts for strength but I don't trust them to survive the rust. I thought maybe stainless steel bolts would be the answer. I know they are not as strong but at least they will not rust away. The class 3 hitch is rated for 5000lbs with 500lbs tongue weight but my load is barely 1000lbs and a 100lb tongue weight or 1/5th the capacity. Should I be alright or does stainless come in grade 8 or 10.9?