I have a 1998. 5 24valve 3500 extended cab dually. automatic. i have put some money in my truck. i am gearing up to put a chip in but i an doing it right and beefing up everything first. i just got my transmission done. so it's ready. anywho. i have been looking into exhaust breaks. i tow a 35 ft fifthwheel toyhauler. and living in alaska i hit alot of hills. i am a faithfull banks consumer but the price of the exhaust break from them is insane. i've heard alot of people like the bd break. i'm curious who has put exhaust breaks on there truck?and how big of a difference it made and what brands you guys have used. tell me if you would use it again or buy a different brand. and if you don't mind let me know how much it was to. thanks for any information.