hey guys I just thought I would throw this in. I run an almost standard setup with a single gt35r .63 housing on my GTR with excellent response and great power figures.
It has run 301 rwkws at 16psi on a very basic tune and I am yet to tune it properly.
I am running a 50mm external gate in order to accomodate the exhaust flow.
I have not had any boost problems or lag or any problems relating to running out of flow in the high rev range.
The exhaust has just been repaired at castle Hill exhaust. A 3inch high flow stainless cat was installed and the wastegate was plumbed into the exhaust before the cat to make it nice and legal and much much quieter.