Classic Industries now stocks reproductions of the original style Delco Packard plug wires used with 1956 2nd design GM truck models. Each wire includes the original style lettering with the wording Packard TV R Suppression.Note: These are not for use with after market type headers or after market manifolds. Wiring may be applicable for use with other manifolds or headers but are not guaranteed to fit.Important: Product does not have date-code marking on wires as date markings werent applied until 1961 and later.