Ive owned a 02 LB7, 05 LLY, 15 LML The LB7 got the best fuel milage. I did have the injectors replaced twice. Overall my 02 was my favorite truck. The only other problems I had was axle seals and neutral safety switch. I say if you like it go for it. For that pice even if you have to replace the injectors a few times and head gaskets better then paying $70 thousand for a new truck