Check out Unique Motorcars. They are in your neck of the woods (Gadsden, AL) and produce a pretty accurate 427 S/C and 289 FIA. Both are reasonably priced as well. The Weaver family owns and operates Unique (and has since '77). They are extremely customer-service oriented and will be happy to give you a factory tour.
www.uniquemotorcars.com
Russ