Fender tag

I don't know a lot of those codes but the ones I do know

N41 dual exhaust tips
R21 AM/FM radio
H51 A/C
J25 3 speed wipers
J52 inside hood release
L31 fender mounted turn signals
M21 drip rail mouldings
C56 bucket seats
C73 fold down rear seat
F18 65 amp alternator
B41 Manual disc brakes
C16 console

360 / auto

Scheduled to be built 12/6/1974

Seems like it was white with blue interior with a white vynil canopy top