Finally finished Got the beige door panels in with my original black arm rests, installed beige carpet obtained from Morphenspectra (thanks James). Everything went quite well. Carpet fit extrordinarily fine. Door panels were a breeze. Removed some surface rust areas on the floor pan (but decided to leave tar on & continue to be blind to what might be lurking) Actually, when I chipped tar back to good metal I was finding original grey paint. There were no real areas of suspect. Anyway, I'm happy with the outcome & looks. Now all that's left to get "beiged" is the seat inserts.
Oh! and I didn't have any parts left over... not even a screw
.....b