I finally got this finished up. I found a pair of tight radius tube bending pliers at Harbor Freight. I remade the return line so that it fits much better (pic). For a resrictor, I drilled a 1/16 hole in a pipe plug and threaded it into the back side of the return side pipe fitting (pic). I also have a drawing showing the bolt patterns for the mounting adapter. Thanks to everyone for their help. Now its on to the dual exhaust install.

regards,
Leon