Yes, the car could be worth the mid-20s (There are plenty of slapped together clones that are getting those prices.), but you would probably have more into it. If you are going to truly restore it, you're also looking at the cost of matching #s drivetain. Even if you don't go that far, how about painting costs, repair of the A/C if it does not work, etc.? Those options do add value to the car, but it's hard to put a price on it without a better idea of the overall state of the car. Post some pictures.
We're not trying to discourage you, but the days of restoring a Camaro "cheap" are long gone. But I think you ought to do it, just because it's butternut yellow! Let us know what you decide...