Originally Posted by jadams68
That's my understanding on things. I mean you can definitely find a 258 from a CJ on Ebay from time to time and local yards.
Your current 258 doesn't have smog equipment, so any future engine wouldn't need it either.
So you fully understand, all you have to do is get any 258, even if it comes with all the smog stuff on it, and rebuild it. When you complete the rebuild you will still need to use your carb., your intake manaifold, distributer, pullies, belts, wires, brackets, air cleaner, hoses, etc. You just wouldn't use the EGR, carb, sol-vac, vacuum hoses, distributer etc. from the newer engine. HTH