This Ford 427 competition engine kit is injection molded plastic & works for both 1/24 & 1/25 Scales. You can build the engine one or two ways with two 4 barrel carburetors or with a blower for the real hot rod and drag strip. The Ford 427 engine works great in your next hot rod or race car. You may also want to use this Ford 427 engine kit when doing a diorama.