Cory, welcome. Your post is the first step many of us took as well. As you will soon find out, there are a large number of replica kit manufacturers out there with a wide range of offerings. They range the gamit from very accurate to the original Shelby's to cars that are loosley based on a Cobra (i.e., longer wheelbase, different body shape, etc.).
For starters, here's a thread you'll find interesting including an Excel spreadsheet Warren did comparing the various manufacturers.
which kit would you purchase
Your desire to build versus buy a turn-key or turn-key minus will reduce the number of choices. I'd be happy to discuss why I chose Hurricane Motorsports over the others available - just PM me your phone number.
Good luck
Matt