i've actually see dual exhaust on both sides and its was on a dodge 3rd gen diesel and this was a 5in and it ran along the frame then came out in front of the tire so a gas would be no problem i would have pics but the classified is gone it was on dieseltruckresource sry

 

my exhast is out pass side and i love it cause it makes it louder cause of the shortter pipes and i asked for both sides and cant be done cause the heat wit the gas tank unless u can make some type of heat sheld but seems like to much work ....good luck