Thanks for the Info. I have owned several 454 vehicles. None were Truck blocks all were Passenger. It is the big trucks and the others that are the tall deck type. Those engines could be built but the pistons are the problem. All the bottom ends are basically the same. a buddy of mine had a tall deck 454, he had spacers made to run an aftermarket intake. It is possible to make a true truck block run like hell but it costs more.