MSA Twice pipes

The kit comes in half a dozen or so pieces. The welds he's referring to are where the pipe meets the mufflers and the exhaust tips as well as the y-pipe.

I've got an install thread similar to this from when I did MSA Twice Pipes and 3-2 coated headers. Personally, I was dissappointed that the pipes come out the rear horizontal and not vertical like the old school twice pipes.