I found a picture that should settle the issue. This is a tunnel-back C3 ('68-'77) not a bubble-back ('78-'82). If you look under the louvers, you can see the sail panels.
interceptor-corvette023.jpg 89.2K
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Here are the suggestions I made in your other thread about this car:
From what I can tell, here's what you're going to need to pull this off:
1) AMT Eckler's Corvette for front fender flares (slight modifications needed) and headlight buckets.
2) 1980-1982 MPC Corvette for the nose piece. The Dragon Vette, which MPC labels as a 1982, will have this as well as the rear window louvers.
3) The rear end cap is definitely from a C4 ('84-96). MPC made a bunch of them and they're generally fairly cheap, so finding a match for this shouldn't be difficult.
4) Rear spoiler could probably be made from the one in the '69 Cougar, or make it yourself (huge sag in middle optional)
5) You're on you own when it comes to the hood. Maybe one of the resin casters has one.