letter transfer

I have a 66 dart that is a 270 hardtop. I plan on not reusing the trims that go all the way down the side, but replace them with the GT Dart letters on the rear quarter. I have a parts car (gt) that I need to make a template from for the layout of these letters. Has anyone else done this and what did you use for layout/ transfer. Was going to cut these sections off and place them over my quarters for transfer but hoping to sell the shell and don't want to cut before that. Looking for suggestions.
Rod