I am toying with the idea of somehow, maybe, possibly running my exhaust can, or an exhaust can under the seat, can this be done, has anyone done it or is it madness ?

The reason I ask, is I am considering making a luggage frame for the back of the bike, to include side frames for panniers, or the ammo type side boxes and the current position of the exhaust will get in the way, either that, or melt whatever is on the side frames. So to me, the logical place for the exhaust, is up under the frame above the wheel.