The engine. We've since taken it to the 2009 Bethel Maine Jeep Jamboree and realized this engine needs some attention. It appears the timing is off and it needs a valve job. So, that will next on our list. At the 2009 Jeep Jamboree 101 course. Bethel Maine.We put a 4" lift on Rockadile and new tires and wheels. Added a winch and jerry cans on the back. Hubby made his own tire rack on the back and welded that on. He also welded a roll bar into the Willys so we could take it on the Jamboree. Had to put D rings on the front and he made the tail lights recessed into the back so they won't catch on anything while on the trail. He had to make modifications to the front axle due to the lift, but it went down the road great. Just needs some work on the engine to make it run stronger. Went all Friday on the trails and then Saturday it decided it wasn't going to cooperate. So, he stayed behing while I took my 97 on the trails and then at the end of the day I broke MY Jeep. Oh well. Talking to Jody Wilson on the 101 Course at the 2009 Bethel ME Jeep Jamboree.Heading up the trails 2009 Jeep Jamboree.He purchased a soft top and metal half doors for the CJ3B.