My biggest thing would be ground clearance going under the oil pan maybe? But it would for sure add some heat might not be an issue I don't know for sure on that. I wouldn't do 4/2 personally because if you ran the same exhaust for both the 2 would have less resistance, as the side with 4 would have twice the exhaust flowing through, this is why 3/3 is the way they are all made that are split. What about a set of Fentons cast headers?



You could run it under you oil pan or easier may be just do a y pipe together running back into a large exhaust pipe, not a true dual but there are still ways to achieve the look with great sound a performance in my opinion that may be more practical.