I've got a 03 Duramax with a new Juice and attitude. I gave my uncle a ride in it and he was greatly impressed. He asked if there is anything made to wake up his 94 6.5 TD one ton, with 200,000 miles. This 03 is my first diesel and I didn't know what to tell him. What can be done for the 6.5 in his truck. What works and What needs to be changed.