340 Fender Badge conundrum

Need some clarification. I have two 72 Demon H code bodies. One is a Canadian, highly optioned 727 console shift. The other is a US car, limited options with a 4 speed (fender tags and VINs verified). The Cdn car has fender holes on both driver and passenger for both Demon and 340 badging. The US car has Demon holes on both sides but only 340 holes on Driver side. Is this possibly correct or is the passenger fender a non 340 fender replacement? If it is a replacement it has to be old as it looked original as the car was torn down. Thoughts?