67 Barracuda Big Block K frame keep it or change it ??

Additionally i am sure he could add power brakes using the mopar performance master cylinder firewall adaptor that moves it over slightly to clear valve covers, as well as using a double diaphragm booster thats smaller in diameter, and use an adjustable length brake pushrod. All this is easily reversable and is a bolt in. So i am not sure what you mean about ruining the car.

I could see you being up in arms if he was talking about minitubbing or back halfing it, because thats NOT easily reversable.