So like right after the flex section? Then are you making some sort of dump pipe to go from the cutout out the side, or pointing straight down? I guess I haven't looked at the bottom side of my car in quite some time now, so I forget what it looks like, and can't picture exactly how I could set it up. Oh and I found the site finally too after searching through yahoo and google and crap.
http://www.mccordcg.com/mpp/mpp.htm