Im posting for a good friend of mine. He has an 03 LB7 and the truck needs Head Gaskets. Hes asked me to maybe help him since he knows I come to the forum for help alot. Anyway, he doesnt want a drag truck so I have gave my opinion and said maybe do gaskets and good studs, injectors have never been replace before and there is no known issues with them so replace them while hes in there yes or no? Also, we are in Florida and we are not aware of any mechanics that are trust worthy around where we live. so should he attempt to accomplish this task with or find a mechanic. I would def give a good friend a helping hand and the experience would be a plus for me. I have never done them on a diesel but I def am not shy to tackle a project.. Just a little insight or help moving forward would be greatly appreciated.. Thank you for any thoughts.