OER Parts offers a wide selection of Cable & Linkage for your 1968 Plymouth Road Runner. OER Parts offers 1968 Plymouth Road Runner Cut-To-Fit Stainless Steel Throttle Cable, 1968 Plymouth Road Runner Carb To Accelerator Cable, 1968 Plymouth Road Runner Carburetor Linkage Set, 1968 Plymouth Road Runner Carburator Linkage Stud, 1968 Plymouth Road Runner Carburetor Linkage Plate, and 1968 Plymouth Road Runner Carburetor Kickdown Linkage.