When we were getting our 'Club Cobra' badges made, we thought a good way to mount them, would be between the bumper tubes. Then found out most are 2.25" some @ 2.50", and longer wheelbase cars (Classic Roadster, and few others) @ 3.50" Have never seen or heard of 3.75" I would say Bill S. or Patrickt ideas are best choices, as Patrickt said, we can never use as intended anyways
. Cheers Tom.