I should have called Summit and asked about the 67-68 Chevy Astro vents, they're for Camaro & Firebird so I'm sending them back, I should have realized since 67 and 68 a totally different dashes, I'll order 68-69 and make sure they're for a Chevelle since the VA under dash vents look pretty tacky IMO, I'm even thinking about replacing the new Non AC dash carrier with a new AC carrier...guess I could try using the Dremel first