Never posted in this forum, but was hoping you guys could fill me in on something. Im pretty familiar with the exhaust brakes on the older models but not so much with the new motors. My neighbor bought a cab chassie with out an exhaust brake. I thought all the cab and chassies came with one? Any way he called the dodge place they said they had one for $99. 00 and would put it on for $300. 00 this doesn't sound like the old one's at all? I did a search with no luck. Thanks in advance