Powermaster offers a 140 amp solution for those with 86-93 Mustang 5.0L alternators. These units are bolt-in replacements for the stock alternators on '86 -93 Ford Mustang 5.0 .Excellent Output at IdleEasy One-Wire Installation6 AWG Charge Wire Provided Proof of Performance TagComes w/ 6-groove Serpentine PulleyUpgrade for '66 -..