Thanks for sharing the SPID, indeed a cool old truck. You mentioned you had some of the original interior pieces but planned to keep the Super woodgrain dash and gb pieces - are you going to go back to a parchment seat cover? Since you're gonna retain the Super dash pieces, might as well go with a Super's parchment Custom Cloth cover too! (i.e. parchment vinyl with black/white houndstooth)
I personally think that would look really sharp. But the Cheyenne scrolled vinyl would look great too - and your current seat cover looks great! Lots of choices. That's a great looking truck, no matter what you do with it, congrats!