So I have been toying around with the idea of doing a complete overhaul on my FJC exhaust but had a few questions in mind. Would it be pointless to do a shorty header into a high flow cat into a URD Y-pipe? Would this work or fit properly? Or does it specifically have to be a longtube header in order to work? I have not seen any photos with a shorty into a Y-pipe. Would it just be better to go with a longtube header with Y-pipe combo? Any setups that would allow me to utilize a better flowing exhaust but still keeping some emissions controls on? Keep in mind not looking for the loudest car on the block and not expecting significant power gains. Any input?