Yes, I saw that too. They did it and it may behoove us to know their recipe, I again, am just getting my head around all of this. All that I have seen had single pot master cylinders as well. yikes.
So I am building a 68 Charger which is giving me all of the thoughts on this. It will get at least the C500 aero package. but the best solution would go Daytona just to help with the HP aspect:
Drag Coefficient:
Charger 0.484
C500 0.411
Daytona 0.28
Likely the best solution is just build the car, learn, go out and talk with people and come home to build a purpose built car - unless by some miracle, this one would be close to useable.