1974 Dodge Data book:
https://www.e-bodies.org/resources/data-books-salesman-pocket-facts-color-upholstery-guides/
Download it, save it, share it, view it online, use it however you want! :slapme5: Free to anyone and everyone that wants it.
Direct links:
Full Book
http://www.e-bodies.org/Resources/Data_Salesman_Color_Upholstery/1974_Dodge_Data_Book.pdf
Challenger Section Only:
http://www.e-bodies.org/Resources/Data_Salesman_Color_Upholstery/1974_Dodge_Data_Book_Challenger.pdf