slant 6 holley carb?

Hey guys so, i pulled apart the dart to replace the cracked exhaust manifold, and while in there the carb on it is a holley, and has a rather large rubber hose on the top, i believe it to be a fuel return line, (no vacuum) well this is just hanging off the top of the engine right over intake/exhaust manifold, which cant be good should she ever decide to burp, can i just extend it out of harms way? or just block it off? this carb has been on the car since atleast the 80's it is a single barrel Thanks!