Build plate decoding

L1XX is a cloth & vinyl interior.

The type (bottom of page) - http://www.hamtramck-historical.com/images/dealerships/colorAndTrim/1971/71_Valiant_Duster0002.jpg

The color swatch (bottom of page) - http://www.hamtramck-historical.com/images/dealerships/colorAndTrim/1971/71_Valiant_Duster0003.jpg