Saw a 74 at the pick-a-part today. It was painted white (11) with a white interior (781). But it also said NUT on the TT. I looked at the 74 page and it mentions SAD which means Saddle dash which I'm not even sure what that means let alone NUT. The dash and carpet were dark green. Seems like a weird combo. Just wondering.

Nuetral Interior most likely.

781 IS neutral vinyl interior not white. i believe gm started painting certain parts of the interior to match the interior like the steering column. check this link out http://www.nastyz28.com/2gcog/stegmiller/cowl_tags.htm#nor73