I have to say great idea. The problem most people have with buying a exhaust system. Is finding one that meets all thier needs. I own a srt4 and it took me a while to find one that work. I definitly recommend makeing certain peices swapable. I am in the military and im looking into getting a srt6. I get stationed somewhere new every 3 years or so. Every state has different emissions laws. being able to swap a cat in and out very fast is a great idea. Also a loud/ quit muffler option. i love my cars loud but alot of people dont. This way everyone wins. Hopefully win i do get my srt6 this system will be out.