[clay68c10]

On to the rear half. This part took me a couple of weekends to do. I tried several routings and placements for the mufflers. The best in/out I could come up with was high inlet and center outlet with the mufflers vertical. The outlet was really the deciding factor since the shocks and diff housing left a fairly small window.
On the trailing arm end, there's a couple of inches clearance. It should be plenty, I used a straight edge to mimic travel and it is good to well past the bump stops.
The spans across the bed mount towers were helpful also for cross sill clearance.