thanks for the 1st reply mark!
i'm not really concerned the pipe being roar/efra/ifmar legal.
juz a local club racer from asia.
i was wondering if the different size of the stingers make any diff to the power output of the engine?
but like you mentioned, i might just try the skyline pipe with my 12tz.
btw, wat's the diff btw vr12 and vr12plus?