Cosmic Pariah: Yeah. Me too!
1969383S: You got it. While I said "I don't think it's an S but has a lot of the S features", a better description is it has a lot of the S performance without the higher end S features like a center tach/or/clock/or/vacuum, or driver's side remote mirror, or a fold down rear seat. I have a lot of research to do, but I checked the numbers on the block, trunk and core support, verified the rear end is sure grip. I do have the fender tag.
All 340 cars came with the Formula S suspension whether they are a A53 package or not. Tack/clock/vac gage, fold down rear seat, right side mirror are ALL options whether A53 package or not.
Post a pic of your fender tag and block out the vin# if you want to figure out all the codes.