As I'm getting ready to sell my JCW, I've been trying to identify the mods it has. There were a number already there when I bought it four years ago. Do you know who made this exhaust? I'm not sure what this is called, but it seems to me to begin with custom parts at the turbo. The cat and muffler are definitely non-stock.

Thanks!

 

looks like alta catback system, but yea that catalytic converter isnt stock either