With the single piece driveshaft and 3.5″ single exhaust I was finding that the heat shield between the exhaust and driveshaft was in contact with the exhaust, the space is tight between those two main components.

I took a hammer and started strategically creating flat spots so that the driveshaft and the exhaust pipe each had some space with clearance to sit within.  I still need to do a test drive to ensure the driveshaft doesn’t rub anything. When I pressed on the heat shield I was getting movement of the heat shield where if it were too close to the driveshaft I’d have expected that there wouldn’t be any movement.  Hopefully that’s a good sign that the clearance is sufficient.