Originally Posted by C4NiNjA
"Also, early WRX gearboxes (mid-2003 and earlier) had narrow (face to face width) 1st, 2nd, and 3rd gears. After mid-2003 the width was increased by 1mm on these gears and therefore matches the width of the RA and STi gears we sell."
I have a 2003 WRX, how would I know which side I fall on?
You would need to know if you had an early 03 or late 03. I have an 03 and broke my gears two days off the dyno, most of the reason was due to the fact that I was double the whp I was stock and I put in an act HD clutch. Whatever, it happens and I just bought a full 6MT swap since I didn't want the wine of the PPG and the uncertainty of the RA gears holding up.