I installed the bushings on the speed 3, Install was easy and only took 45 minutes, but I have installed a short shifter before in an 04 mazda 3 so it may take you longer. Shifter feel is greatly improved with no negative effects, like a vibration though the shifter. I haven't missed a shift since installing the bushings, before putting them in I frequently couldn't find third because it was never in the same place. Overall the mod is definately worth the money and the time it took to install. Shifts feel crisp and precise and the rubbery feel the ms3 has stock is gone.