I sell restoration products that are specific for rust. POR-15 rust preventive paint . If you want more info.you can look at my site, porsouth.com. We carry fuel tank repair kits that put kreem to shame. If you are not fully satisfied with our product I will refund your money. I have put our tank coating in the following cars that I have restored: 70 GTX 440-auto, 70 bee, 70 coronet R/T, 70 GTX 440-4spd, 71 RR, and a 71 CUDA. My cutomers have it in everything from equipment, pro street cars, motorcycles, old scooters, etc. I will send catalogs to anyone interested. Thanks.