Yeah the 2-in-2out design I just had to have. If I had had any other design I'd be driving along and be worried to floor it, all the while thinking dam, It must be pouring out smoke from one side and just a tiny bit the other, looking stupid. But now I can just floor it whenever. I'm a bit obsessive like that...
It is actually really easy to mod the diffuser. I'm quite sure anyone around this forum who has done any DIY before could do this in half the time I did. I am just, as I said, obsessive and probably make a task more difficult than it's meant to be by being so picky.
Well hope that gives you all an idea of the exhaust design. The test fit of the diffuser was actually amazing I simply cannot wait for the exhaust to be bolted on tomorrow.