My dad had a 68 GTO. It was plain but rare considering that it had a 400 mated to a 3 speed in the floor. Evidently Pontiac didn't use the 3 speed very much. He had several classic cars I wish he could have kept: 57 Chevy, 65 Mustang, 68 GTO and a Chevelle that I don't remember the year of.
If you can't find a good car to restore to collector condition, then consider what they are calling resto-mods. You start with a project car and build it with updated aftermarket or OEM parts.
My ideal would be a 68 or 69 GTO body with a newer GM LS1, LS6 or something of that nature. I would trim down the weight where I could, add a perfromance suspension, disc brakes and add some performance mods to the engine(nitrous). I would try to make it appear stock on the inside and out, but a have a modern screamer under the hood.
This route may save you the big bucks of buying a numbers matching collector car, plus you can learn while you build it without fear of messing up something that was already of enormous value.
