too f..ken much!!!!
here is my recent purchase for my build up.. overkill for my goals.. but hell they are sex all over!
i probably paid a bit too much for em .. even with the HPC coat.. but finding them alone.. and for sale was enough.
http://outlawconnection.com/angryaussie/sig/r31/P4030009.jpg
is it an ex GTSr fred gibson motorsport one. apparently..... they flowed the same as the standard manifold.. but in split pulse to help spool up. pretty much the same idea as the GTSR. gains of around 25rwkw was typical, bolt on.