Bang for Your Buck, excellent alternative to an expensive race-style mount which results in tremendous vibrations in your car's interior! Whiteline's Positive Shift Kit inserts into the factory engine mount and results in a greatly improved shift feel and response by reducing the movement of the rather sloppy factory design.
Whiteline Part Number: KDT967
Having personally tested this on the Unity Si, this mount is perfect for those looking to reduce slop in the drivetrain while accelerating aggressively, and especially during gear shifts where one really feels the factory mount and bushing falls apart. Simply remove the mount from your vehicle, grease well and insert the single bushing, and reinstall the mount again. Minimal to no vibrations, car should've came like this from factory!
Unity Performance also offers the Perrin RMM Inserts, a more aggressive offering for those interested. Perrin's design utilizes two bushings, one on each side and leads to a more rigid overall design. The offering is still daily-friendly, but you will notice more vibrations versus the Whiteline RMM Insert, but not as much as a complete solid racing style mount.