Ill be picking up my "new" 85 CJ7 this week. I know my way around the 258's pretty well, but this one has a swapped in 304 with a vintage R4B dual plane intake and Edelbrock performer 1406 carb on it. Failed smog due to high HC and CO, passes for Nox. Do I have any prayer of getting this beast through emissions considering this was originally a 4.2L Jeep? They didn't fail it immediately for not having original smog equipment. I also can swap my motorcraft 2100 off my 258 if it will make it any easier.