I just purchased a 1973 CJ5 that my father-in-law bought new. It has 34,000 original miles. 258 straight 6, 3.73 gears, T-18 4 speed, Clifford intake, MSD distributor, and custom stainless exhaust manifold with a borla muffler. I just installed the Holley BBD fuel injection conversion. I'm in the process of installing a power master 150 amp alternator.