I'm sure it has been beat to death, but it's about that time for me. I want some opinions on if I should get one or not. I can either sink money into my truck, which has 170,000 miles, and I don't think I will ever see 18mpg out of it. I can get a 5.3 GM, or get a 5.9 Cummins. The only real problem I have is that I very rarely pull anything anymore, but that might change when I get another bass boat. I don't know if I can justify the upkeep on a diesel or not. I wanna say that the 5.3 is the logical answer, but then again, I fight it with the longevity of a diesel, and plus playing around with a diesel is more fun anyways. So help me out guys, and please be as specific as possible in your opinions.

 

I would go with a Cummins for sure!The longevity of the engine is awesome and nothing rides better,low end torque management.Some have put several hundred thousand miles and their Cummins still going strong!