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Body Type: J = Challenger R/T
Price Class: S = Special
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Actually, the J is for a Challenger, and the S is for the R/T. A "regular" Challenger would be in the "High" price class, so it is coded "JH." It starts with "Low" (in some cases, but not the Challenger's), then "Medium" (ditto), then H, then "Premium" (ditto), then S.
Interestingly, the quasi-luxury Challenger SE received a different body code (29 instead of 23), while the respective Plymouth Barracuda Gran Coupe received a different price class (it was "P") yet had the typical hardtop body code of 23.
