Here's the breakdown:
Trim - 5501 = Copperweave plastistrand seat and door panel material
IP (Interior Paint) - Australian Beige
DR (Delivery Region) - 1 = United States
TR (Transmission) - 2 = Three speed
AG (Accessory Group) - 36 = Stationary rear seat, deck lid, ash receiver, front wing vents, front cigar lighter, tilt type rear view mirror
Schedule and Item pertain to when the car was assembled. For this car, it was the 160th car on the production schedule and it was built on the 94th day of production.