I am thinking about adding a rear sway bar to my '70 Challenger. It looks like it will be awfully tight, I assume the bar would have to go between the exhaust and the body/frame.

Has anyone added a rear bar with 3" (TTI) exhaust? Did you have to modify anything?

I am looking at the Firm feel setup, as I like the factory style setup. http://www.firmfeel.com/e_body_mopar_rear_sway_bar.html Pics would be great.