This is 24 cylinder Detroit that these guys are putting in a custom 359 Peterbilt. It will use an Allison Transmission, and the engine will be in the front of the truck. They are starting off with 40 foot 4" X 14" rectangle rails, not sure how long it will end up being. This baby is estimated at 3,424 horsepower. - The Ultimate Blog for American Muscle Cars and Muscle Vehicles