Calm down these are made very thick steel the rest of your undercarriage will be destroyed before these are. The best prevention would be to seal the ends and the either spray paint them with many coats or go get some of that rubberized undercoating stuff and shoot them with that. Again you should print the pictures and take them to the shop. Also, continue to shop around for a shop that will do them right and for the price you want. There out there. The exhaust shop who did mine saw the pictures, noted the location close to the gas tank, and still only charged me 50 bucks of labor. He even hit it with a coat of spray paint over the welds. I had already painted the rest of the SFCs but taped off the areas that would need to be welded.