3" Dynomax Ultraflow Carnage

My system consists of Doug's headers with about 20" of pipe between the header flanges to the mufflers with turndowns dumped in front of the axle, only hangers are the rubber strap types on the muffler outlets like any other system. It is much shorter than a typical a/b body. Overall length is approx. 44" or so flange to turndown. Hangers are definitely not an issue, but the vibration and exhaust flow, metal integrity after the welds during manufacturing and metal thickness would be a determining factor I'd guess