They are building what they want with their own money. That obviously didn't want a Ford engine their GM truck. They didn't want a newer GM six. As a guy who likes the older Chevy & GMC sixes I really like what they have done. It's really been since about 1954 that there has been much updated information on these engines, Bill Fisher's book. Looking under the hood of their truck would be a treat. Hearing and seeing it run even better. Practicality isn't the goal.
