Posted 9/29/2008 20:13 (#471667 - in reply to #471654) Subject: Re: adding pusher axle to Mack CH613 grain truck
So. IL
The 613 never did have a cab mount exhaust. They had a support behind the cab made of square tubing the held the exhaust. I am willing to bet that there is not enough room between the cab and box to mount it back there. Probably why the exhaust is where it is.