Correct GM replacement harness with all the correct Colors, Lengths, Clips, Vinyl and Cloth Wrapping as original except modified for HEI Distributor................. Fits 1963 Chevy Impala Belair Biscayne with 283 or 327 all models 2 and 4 Door Hard Top Sedan SS Supersport and Convertible with HEI. Thanks for visiting and hope to have your business. Per California Prop 65 Law we are required to put the following warning on all our listings. This product can expose you to a chemical known to the state of California to cause cancer or reproductive harm.