My Challenger is an N code non R/T (JH27N0B). The engine is blue if its an automatic and would be orange if it had a 4 speed. I'm pretty sure a 3 speed manual would have been available, when I was looking for a convertible in the mid 90's a guy offered to sell me a '70 R/T 383 vert with a factory 3 speed manual, although I never traveled to see the car in person. Here is a picture of a '70 N code 383 B'cuda that I saw a few years back. It was a gran coupe though.
