On early AD's the door relay bars ran horizontally in the indentation; sometime around late '48 Chevy changed them to run at the angle shown in the photo and added rubber bumpers to space out the door cards. This effectively reversed the door handle operation, presumably to prevent occupants from inadvertently opening the doors at speed and falling out of their trucks.
Reproduction door relays only come in the later-model angled configuration like yours. If you want to have your door relay bars run horizontally inside the indentation you'll either have to find some early style relays, or modify some mid-60s relays like I did:
