I am working on a 1989 chevy 1500. It had what looks almost like a "custom homemade" tank in it that was held up by its own mounts, not straps. The gas tank was faulty/poorly built, so i decided to replace it and not fix it. I ordered a new 23 gallon tank and some straps. Here is where i run into some problems; the straps did not come with any rubber/cushion and i am wondering if i need to put something there to keep it from rubbing through. I also do not know were the straps attach to the underbody. The straps are just two long strait pieces of steel, I think that they need to be formed around the gas tank but am not sure. One of the straps has a stud on it strait off the end and the other has one end bent up at a 90 degree. I don't know what side of the tank each should go on. I looked in my manual only to find simple instructions of support tank and remove straps then lower tank, installation is reverse of removal. I then searched around online but cannot find any diagrams or illustrations of the gas tank installed or any better instructions. Any help would be appreciated!!! -Thanks Ok, I will get some rubber . But I can't look at worn spots to see were the straps go because the last tank DID NOT have straps, it was held in by mounts attached to the side of the tank and then to the frame rails. There is no spot that looks like the straps attach to on those frame rails. Are there hangers attached to the frame rails that the straps attach too?