One extra caution about fuel senders. I rebuilt mine and it is working perfectly, but when I put it in the car it did not work. I cleaned and coated my gas tank inside and out with proper sealers. I did too good of a job
. and it caused me to lose ground because the Por 15 on the outside of the tank acted like an insulator. To fix the problem I ran a ground wire from one of the sender screws to a good known ground point in the rear of the car, now my sender works perfectly.