Brought my 02 Dakota in the shop yesterday for a front end noise. Turned out to be the prop shaft on the diff. Problem is that my buddy at the garage was talking to me about the miss he was feeling on the test drive. He was saying that the 4.7 engines have a valve seat collapse problem. Said it could also be spark plug, coil pack, etc. Figure I will change the plugs and hope for the best. Kind of bumming a bit. Love this rust bucket and it has served me well. Why do we get so attached to our vehicles? Jim