If you want to solve the problem with the original tank, I've had great sucess with the Por15 gas tank sealer I've used it on atleast 10 tanks without a problem. It not only solves the rust problem but it will stop leaks. On one of my suburbans the tank was missing and I used a plastic tank from a snow blower, I think I had to drill a new hole in the pan the tank sits on because the gas line attached in a diferent place. Then I used the original straps. So either way will work for you. As far as filters I like the clear ones with the paper element. Ed