Anybody know the honest RWHP of an `06 Cummins? I tow around 10,000 lbs often and would like to pump up the power with my Diablo tuner, but power limitations on my auto trans has me shaking. Seems like adding 100 HP might be the death of my tranny and I just don`t want to take the chance. So the question is, how much honest HP is stock and how much can I ad safely with just a chip? My towing is mostly Florida and lower GA. Thanks.