[Danielg]

went to the shop and looked closer at my sidepipes relevent to chassis and I think it can be done. I know it can. Matter of fact might look cool , a pair of pipes coming out the center under the diff.
I did this on my 1970 trans am, the car is way low on the ground for road racing so I built a low profile exhaust that goes under the rear axle tubes and out the back instead of over the axle or turn downs.
I built it out of 3-1/2" oval nascar pipe, only 2" tall and 4" wide, if you build yours out of 3" oval it's only about 1-1/2" tall. "S " that under your frame from each side then straight under your diff and follow your fuel tank angle and when your done, like my trans am, it looks cool. My TA pipes are about 16" apart the way I did it, but the Cobra I would make them right next to each other.
Just more thought, grey matter at work
Daniel