Kristen,
The 1963/1964 Fairlane bodies aren't out of sight out here if you can find one. But for some reason they just never sold to well in this area and so there is a lack of them to locate. Original 1963/64 Fairlanes didn't come with the 427s in them and the fiberglass hood and all the other trick stuff to lighten the Thunderbolts. So any original body you get you would have to replicate the rest unless you have enough to buy one of the original Thunderbolts which are very rare and getting very expensive. I have seen one replica Thunderbolt with a 460 in it which just blew it as they never made 460s back then. The rest of the car was very nice. Ford only made 100 of the original Thunderbolts and they were sold or furnished to drag teams.
Ron