Just purchased a 66 fastback with plans to build an R code Shelby tribute. I want to build the motor to take advantage of modern build techniques while maintaining the appearance of the original Shelby motor so I'll build a stroker with the original Holley/Shelby Hi-rise intake and tri-Y headers but what about heads. I know aluminum heads are a no brainer from a power standpoint but what options do I have to maintain a more original appearance? Port the originals? GT40? Does anyone make an aluminum head that would look somewhat original if it was painted Ford blue?