i just put a five speed into mine but put the 4.444 ratio box instead of the 4.111 so shoud be able to handle a little bit more than standard and can handle a little more under load..

but from what i have heard WRX's gearbox's dont like much more than standard power?? didnt believe it myself but that is what i was told by a few workshops..

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straight line racing is only half the fun....
C/Vale represent!!