Thanks guys for the info.
Here is the hx of my car
8T03J134430-00863. GT350. Shipped to Ray Whitfield (Taylor, MI) 1/31/68. IBM cost card show this Shelby’s “actual cost” from Ford/A.O.Smith/Shelby was $3819.75. Date of sale 3/28/68. On 6/20/68 original owner Michael Whelsky (Fulton, NY) had warranty service at Reynolds Motors (Syracuse, NY) for repair of l/lock and window handle fell off at a cost of $2.06 with 3745 miles. On 8/12/68 Michael Whelsky (Fulton, NY) had warranty service at dealership for horn to operate at a cost of $6.14 with 6108 miles.