If it fits, it fits. Often while down in and around there, my first inclination is to always replace with new OEM parts if possible. Same for oil pump, etc., while I am there, I might as well change it out, and then have useful spare parts as back ups. I usually carry an extra fuel pump, oil pump, water pump, thermostat, starter motor, cap/rotor, and have been known to carry a complete dist. system in it's entirety. Hate being in the middle of nowhere without an easy exchange on the spot. Specifically, I cannot say it the measurements of the two different years mentioned are duplicates. Others will tell you. In other past times, OEM Jeep timing gear/chain/sprokets had one of those parts, sproket to the cam if I recall, with metal/nylon, or something. Often aftermarket sources could provide solid metal setup which would not wear out as fast as the aforementioned. I have yet to look at my mechanical timing setup on my almost now brand new '89, lol. TRAILS!