These original louvers were on a '71 318 Charger that a buddy bought for parts a year ago. How close are the Dodge louvers to the Plymouths? This same parts car also had a '71 spoiler on the trunklid. Our guess is that the original owners found a RT or Super Bee parts car back in the '70's and mounted them on this car (one family owned car since new, not coded on any piece of documentation).
