I may be wrong, but I think the 64.5, 65 and 66 engines were black with gold valve covers and air cleaner. Looks like in 67 they went to blue. Someone may correct me. I found this out through the forum as I have a '65 with blue engine from PO rebuild and found out it is not correct.
'65 C-Code Coupe Black, Stock 289, T5
Patriot Tri-Y's, Dual Exhaust w/ H-Pipe
Adjustable a-arms and strut rods
Laydown Rear Coilovers, 3.55:1
Watts Link and Torque Arm
Vision Legend Wheels w/ Hoosier H2O
Brains times beauty equals a constant