Here is a pic of my HKS exhaust that is basically the same as this one. You will not need to make any cuts to the rear of the bar to fit it. Its simular to the apexi dual N1 xaust, but instead of the pipes joining into one single pipe, they stay dual pipes to each turbo.
Even though they dont come with cats.. You can actually get them modded to have 2 round cats, as that is exactly what i did to mine