I have a been thinking of ways to do a engine swap without getting screwed with emissions, here is my idea… I originally have a YJ, but, after doing some thinking, I was considering buying some old, dirt cheap CJ, taking off the front clip, transferring it to the YJ and then pulling off all of the VIN numbers off the CJ and transferring them to the YJ. There for, I now have a CJ, with YJ parts, that has to meet the old emission regulations if any at all. I have a feeling this might be kind of illegal, but the though of being able to run what ever engine I want has me watering at the mouth. I know I should have bought a CJ, but I wasn’t thinking of it at the time, and I already have my YJ set up other then the engine. Anyone have any ideas on this one?