Rarest A-Body Option?

How about my dads old 73 340 4 speed duster, chrome package, light package, sunroof!, white buckets, white 340 stripes, red exterior, bought new in late 73 in fairfax virginia and traded in 77 for a datson pick up, had to fight to get $900! Wish he still had it, our other 73 340 has a/c.