The front section attaches to the tailpipes with clamps, just forward of the axle. I have never used this type of clamp and I really like it. It holds extremely tight, doesn't deform the pipe and requires no seal to be leak free. There are cheaper versions of this style of clamp, but this one has an aluminum extrusion in the middle that helps form the leak proof seal as the clamp is tightened. We'll see how it holds up after use.
Here is a shot of the forward section. The crossover is welded, but the rest was just tacked at this point and pulled back out to fully weld it up.
I really wish I had purchased some different MIG wire for the attachment of the stainless mufflers. It got pretty ugly. It's done and it's strong, but it's ugly.