I agree with Stazzi completely...The BAT Y-Pipe looks like the same design as the SHO-SHOP Y-Pipe. It is not switchable between Cat and Off-Road though. $255 for Aluminized and $309 for S/S seems like a good deal to me. If you plan to keep your Cat then this design looks like it would definitly flow better then the Brulen Y-Pipe with that Fcuked up bend similar to the factory y-pipe. Plus a high flow dual inlet cat is included. Buy time you buy a hi-flow cat and the Brulen y-pipe I'll bet you spend the same or more for a poor design that I'll bet flows less. Combine a set of MSDS Headers, Bat S/S Y-pipe, and the S/S Bosal catback system (which by the way fit's quite well right out of the box...no shop needed) and you have about as good of a off-the-shelf system as you can get that flows excellent for about $1,300. You want better flow then this you will need to build a custom Tru-Dual system with Headers $$$
BAT Y-PipeScott