Driving to work this A.M. '04 TJ 4.0 I6 was running rough. First time since I got it 1 plus week ago. I work at a car lot so had a tech run a check came back cyl.2 misfire, plugs or wires. Call the parts store plugs cheap but they say it takes a coil with boots and resister spring, a lil pricier. Ive never been a great mechanic just the basics, is this true info from them? Am I going in the right direction and would most consider this repair basic? I do want to do as much myself as I can. Thanks for any advice that may come my way.