i bought my 03 duramax back in august added a mbrp exhaust and will hopefully be purchasing a cognito leveling kit shortly. but i need your ideas on tunners i had a friend with a 04lly with the bans 6 gun he loved it but i want some of your ideas i do a little towing pulling a skid steer and mini excavator notin to drastic. i want to be able to work the truck and still have fun when im not workin it any ideas good fuel milage would be a plus