i am now the proud new (2nd) owner of a 2005 long bed, 4dr, 4wd, 2500 5.9 crd, auto with only 33,500 miles. it has some mods already.... a lift or level kit with 325/60r18 nitto terra grapplers, cai or rai not sure but noticeably louder turbo whine (which i love) and the tailpipe is at least 4". i still have to investigate the mods further, it was like 9 oclock and dark so i looked mainly for wear, damage, etc. ill post pics of the truck later today, maybe you guys can help me id what i have. i am new to ram trucks all together and have only read lightly about the 5.9 crd so i definitely have more reading to do! is there anyway to tell if my truck has been tuned? i bought it from a dealer and their knowledge was quite limited about the aftermarket stuff. thanks, i look forward to owning this beast for sometime!