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Injector problems were hit or miss on those. If it made it to 107k, either it was a motor that didn't have problems, or it did and it was fixed. And FYI, you can get a LOT more power out of the 5.9 Cummins than you can out of the 6.7 (no DPF to get in the way). Adam knows the quick and easy ways to get power out of that motor -- I had the same truck he's looking at but automatic trans. AEM Brute Force HD intake and Edge with Attitude chip/controller combo. Add a 5" turbo-back exhaust (I didn't have the chance to get that far) to keep the EGTs down and you're good to go with no reliability issues. And the big black cloud is half the fun.......