I guess you could bring exhaust out sideways in front of rear tires. Some 80's Blazers had side windows that did that. Probably other vehicles also. Scab that hardware and modify yours. But, why? Never get it to seal, no one can operate it unless they climb back there. Will shake loose when slamming rear doors, and as mentioned, the exhaust will come in. Is this a show Panel that you have done everything else on? What is it? a 55? 55.1? 55.2? what?