I just bought my 5th turbodiesel (99 2500 sb auto SLT laramie red) didnt do my homework, as I thought all cummins engines were bullet proof,unlike chevys (rods and cranks,etc) anyway,I would like to duplicate my former truck, a 02 3500 6 speed H O dually 545 hp 975lb torque but this one has a 53 code block, did i make a bad choice ?