anybody done any power mods to dodge diesel for towing? Which ones have you used and did you find they were satisfactory? Have had suggestions from several that banks, quadzilla and edge made products that have a reputation as being very helpful for additional safe power when towing, especially if encountering a lot of hills and mountains and even some are saying they get better mpg as well when using these types of products when towing? I have wondered if any have actual experience with these types of products (and not just "word of mouth/heard about/read about") Have not decided if any of these types of mods would be needed?, desirable?, safe? ets. Any thoughts would be appreciated.