They should run to the charcoal canister. Routt county is not part of the air care colorado emissions testing program, however you need to research what the Federal laws require for your truck. There are issues with title and registration once you have swapped in a newer engine, and there may be an emissions test requirement if you are re-registering with a different engine. If you have removed the charcoal canister you may need to install one for the 98 motor.

Josh



80 CJ-7.
It runs