I really like the OEM STI shift knob on the 2011-2012 STI. Will it fit in a regular WRX 5-spd? I know the STI has the collar that you lift up to shift into reverse, but that's probably part of the shift lever, not the knob itself. I know it has the 6-spd tree on top but I could probably replace that graphic. If it does fit, anyone have one they want to sell? Thanks.