66 Dart GT HT Whatsitgonnabe?

Ok, I used the VIN-decoder at mymopar.com:

Make: L = Dodge Dart / Demon
Price Class: P = Premium
Body Type: 23 = 2 Door Hardtop
Drive Train: D = 273 180HP 1-2BBL or 235HP 1-4BBL 8 CYL
Model Year: 6 = 1966
Assembly Plant: 2 = Dodge Main, Hamtramck, MI, USA
Sequence Number: 584933 = 484932th Vehicle

Is that sequence number really correct?