I just got back from seeing the Superbird, what an amazing car! 440 U code 4 speed, 4.10 Dana 60 super track pack car. 26 inch radiator, power steering cooler, power disc brakes with the Nascar style master cylinder with the brake lines on the engine side. If not for the disturbed paint from someone doing backyard body work in the 80s it could have been a survivor car. 96 plus percent rust free, stored in door most of its life. Original fender tag all numbers matched except for a service block that was correctly dated for the car. Whoever bought the car new immediately exploded the original engine and it was replaced with a 440 service block within the date the car was built. It was a time capsule! Other than two spots on the rear quarters at the rocker lead joints, and a quarter sized spot on the dog leg of the right fender the car appears rust free.