Does anybody know where i can buy 1 of these cars and how much?
Ebay is your best bet for those cars, but if you search craigslist, you'll be amazed what you'll find. You can use the two links below and they may help you out. Compare prices, there is going to be alot of money for anything you have listed there. Either way, buying just a shell for most of what you have listed there is going to run you into the 5-10k range, then parts are expensive as all get up because these are "trophy cars", even to make a clone on most of those is kinda expensive. Why not look into the 60's LeMans (its a gto sister car) or the late 60's early 70's plymouth challenger, roadrunner, or satellites.
My suggestion to you, being young, is look for an 80's style muscle car IE monte carlo, camaro, mustang, camino, theres a million of them out there, easy to work on and find parts for still, and don't cost nearly as much, plus you can drive them every day. I've been working on cars since I was young, I have a 73 roadrunner that i built, and haven't driven it in 11 years, why? Because it was made to be pristine, and now its hard to enjoy it when you are afraid of what else is on the road. Any other questions I may be able to help with just hit me up, and good luck!