I installed these.
http://www.westernsubaruclub.com/smf/index.php?topic=25020.0After about 50km of city and highway driving, I'm pretty sure this is one the best mods I've ever done.
Just these 4 simple bushings seem to have tightened up shifts quite noticeably.
On regular shifts from red light to speed limit, it just seems smoother.
On quick shifts resembling a "track shift" there is a lot less bounce in the drivetrain. Clutch in, shift, clutch out without much care, and it just goes smoothly. None of that "woawoawoa" rubber bounce.
A downside to some might be that there is a drastic increase in NVH and general "noise and rattle".
I can hear every spin the diff makes.
It also seems to have amplified some sort of rattle in my A pillar and dash.
This doesn't bother me. I like to hear my car working.
But it might be a downer to others.
Excellent mod. Completely worth the money.
Pretty sure I'm going to do this on my forester DD as well.