Chasers made mine because, as other people have found, the rev210 mod does have it's limits. 2 x 45 degree bends were used in the end i think, they wanted it as straight as possible.
They did say it was tricky to get it to work, which must be what all of you guys are talking about.
I have the standard airbox and standard BOV, plum-backed.
Wasn't cheap, $300+, but still let me run everything as it was and in it's most standard configuration, whilst being the straightest possible pipe.
that should all be past tense, as i no longer have the car