For sale a NOS gas cap #3927086. I'm going to try and attach a thread I started on the message forum that give info on the cap. I purchased this for my'69 and was told it was correct at the time I purchased. Other years may fit as well.
$80.00/shipped+pp fees to lower 48.
http://67-72chevytrucks.com/vboard/s...d.php?t=834854