Early 1968 GTS Fender Tag question...

All GTS's came with a sway bar and heavy duty brakes, all three years 340, 383, or 440. Early GTS's did have the code on the fender tag...
My early 68gts was 100% stock including center nose cone had the HD suspension didnt recall the sway bar thought i robbed that off my 70 duster. Did do a full transplant from the gts into my 67 gt vert.
Dont see how ma mopar could call drum brakes heavy duty they were chitless @ 135 mph
ill look at my build sheet its been awhile iam old now :). Early only being 1967 ?