I bought this '71 Oldsmobile Cutlass S from my uncle in August 2005. During ownership, my uncle (whom my grandfather bought the car for so he wouldn't ask him for his car keys anymore) pulled the original engine (a 350-ci) and put in a 1970 Oldsmobile 4-bbl 455-ci from a full-size. The engine has an F-code block with E-code heads. Over the years he had put a lot of work and love into it, but priorities change and it spent the 15 years or so before I got it sitting on his farm. By the time he decided to sell it to me it was in pretty rough shape. The 455 though is still in excellent running order.