Vince
This is what we call bench racing. Where you sit around and dream up all the things you'd like to do to a car. It's fun and easy. You can come up with some awesome cars in your head. And they'll never be beaten on the street. Might as well give it 500 horses while you're at it.
Now reality is a bit different. With no car and no money and no experience your options are limited.
If you plan to buy a 67 Mustang fastback you should buy the best one you can find with that $10,000 that's also in your dreams at this point. There are plenty of Mustangs to pick from and a lot of them are junk. Get one that you can drive. Don't buy a 302 or 6 cylinder car with an automatic if you want a 351 or 428 with a standard trans. If you get a car that's apart you may never get it on the road without some major help.
Go to www.mustangsandmore.com and check out the forums there. Those guys can tell you what to look for and look out for when buying a Mustang.
AL