Jerry, the steel line runs only a few inches away from the base of the carburetor where it connects to special, thick wall rubber hose that runs the remaining distance to the booster. The presence of the throttle/cruise/transmission cable bracket and manifold fittings, in conjunction with the close proximity of the distributor, cramp the area behind the carburetor. The steel pipe ensures against potential chafing and perforation of a full length flexible conduit.