Since you did the motor swap you decreased the value of the car. If it was all together and had matching numbers and you did a frame off using OEM or NOS parts, it woudl be worth 15K. It's not a convertible or a 289 Hi-Po, or a fastabck. You have a very nice coupe and should trade it for the 99 cobra!
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2004 Mystic Cobra Vert Proud Member of the Mid-Atlantic Cobra Association Sig Courtesy of Durr!
It's a 67 Coupe that was a 6 cyl and had had it's motor swapped out. If it was a K-code or convertible or fastback, then sure! It's not even an original color! Classic cars if they are numbers matching should have the correct paint as well. It's not a 15K car. take the 99 Cobra and run.