Is Banks the only one who makes one of these or is there someone else.

 

The Banks Power Elbow is what real people call a downpipe and exhaust headpipe adaptor. Everyone else has them, too! Better yet, go to one of the vendors like Piers and get the 4" turbo outlet and 4" downpipe; and then to someone like Rip (http://www.protintnw.com/sa-main.htm) and pick up a full 4" exhaust system (or make your own), and still have money left over.