Ralt962 happy that helped. Post some pics of your install, I am sure others have run into the same problem.
Rich - Yes, welding required to install the panhard bar mount on the drivers side frame rail. The instructions show those details.
Yes, there is room to get the exhaust around the panhard bar and rear anti-roll bar, but requires some measure/bend/fit skills that I just don't have.
I wanted to run 2-1/2 inch exhaust the whole way back. I also wanted to do something different, so I thought that filling in the reverse light holes in the rear valence, and running the exhaust through the valence similar to a '66 GT would be cool. Came out great. I cannot take credit for the exhaust system "artwork" ....that is all done by my friend Mike (latoracing) a long time member of the forum.
I did all the under the car detailing, but the exhaust is really exceptional. Based on a 1970 "Pypes" 2-1/2 inch SS exhaust kit. As I have a convertible, this was a real challenge as the exhaust needed to sneak on top of the center reinforcement plate on either side of the driveshaft.
Pics below