Air gap underhood

So I've had several guys call me about buying a air gap intake but it seems they think it will hit the hood of there car? All three guys where owners of 67-69 barracudas. I had it on my 68 dart with no problems but I can't tell them with a 100 percent certanty it will clear there hood.
Am I missing something? Are barracuda hoods lower? I'm in no hurry to sell it but I don't want to sell it to some guy that thinks it'll clear his hood if it won't. Thanks.