Mine is a factory R/T with a flat hood. It is an oddity though. Mine came with the flat hood, no R/T badge on the trunck and no wood grain in the door panels. My dad bought the car in 76 and remembers when the original owner bought it. He can't remember the reason it came with the hood it did but remembers that's the way it came crime the dealer. It is a oct or nov 69 build car
You can tell the built date if you have the fender tag. On the second row, (from the bottom), your 4th code, (from left to right), is the built date. It is a 3 digit code that will start with 12 possibilities, (month), followed by day. 1=January, 2=february, 3=mars, 4=april, 5=may, 6=june, 7=july, 8=august, 9=september, A=october, B=november, C=december. For exemple, 219 would be february 19, or B23 would be november 23. Would love to see the built sheet from your car.
Robert