In all kiddin' aside, that 63' is quite an impressive car for a real street driven HEAVY weight.
If I were him and the blower was the only choice, I'd semi alter the rear wheels forward and lay a straight axle on the front to look the part of yesteryear. It would still be streetable as it is now, bite a lot more at the line while looking like it came out of a 1966 Super/Stock magazine.