I've expereinced the same "confusion" over my 68. I'm assuming you got the 716 reference for your buckets off your trim tag. The problem is 68 trim tags don't tell you much of anything else about interior. If you do not have original documents on your car, it IS hard to know how it was originally ordered (and later modified). I've looked at an options list from GM and several web sites for 68, and from there it is difficult to tell you if there was an overall RPO that covers your car. For example, pedal trim and a console could be signs of one "appearance group" (actually, I would say the combination of two), but they could have been ordered (or added) seperately.
What else can you tell us about the options on your car? Do you at least suspect it was an RS or SS or not.
I waited a couple of days to respond to your post to see if anyone (Help John or Kurt or anybody!) could tell just from that information. I'd love to know if there was a simple way to tell just by looking, but after three years of seaching, I suspect there is not.
Hey guys, help supernove and me out....