Some did and some did not.
My 1st 72 Demon 340 3 speed car was like 04/72 build date. It was a stripped car and had metal Demon but no 340 call outs. Higher interior trim level.
My next Demon 340 was a 72 with striped and Demon 340 decals fenders and rear.
My currrent demon has Demon 340 metal emblems on the fenders only but no stripes. I’ve yet to figure a reason or why they did what the did.