Here is something interesting my 88 Jeep has an extension molded into the box and butts up against the fender using a foam strip to seal it, the second photo shows it molded in with the air box which is original. Most likely all Jeeps newer than 88 aren't like this thanks to Chrysler. My 88 has Mopar and Chrysler parts, so I wasn't surprised when the Chrysler parts gave out first. They also apparently did away with that extension on the air box knowing the gas mileage would decrease.