Tim- Welcome to the site. I'm just northwest of you a couple of hours in Boone. You may want to use the search feature to research your problems. Most every angle of our cars have been discussed many times with many different angles to fix, improve, modify, change, or enhance what ever issue is at hand. If you can't find your fix, post your concerns out to the group. There are many extremely knowledgeable folks on this board and know these cars inside and out. I have very limited knowledge on the 280's since I deal with a '72. Good luck on your project - I would have to agree for you to start with the radiator and take it out to have it cleaned - rodded - and boiled. While you have the gas tank out I would have it cleaned and coated. Use the search feature and there will be detailed pics on how to DIY with most projects along with detailed info!