 The short cab length was achieved by deleting the fiberglass grille, flattening the front of the hood, and applying a very distinctive flat nose below the hood.This model was produced in response to some state laws that restricted the overall length of tractor trailers, and thus permitted the use of longer trailers.In the last two model years a three-cylinder Detroit Diesel 3D-53 engine was offered in 1 and 1½-ton configurations (8E15 and 8E25).