NM Eng. Shifter Assembly Box Cover • R-ChassisA short shift kit is one of the 'must haves' in improving your Mini motoring experience. Unfortunately, any short shift kit upgrades do not allow anyone to retain the assembly box cover due to the extended ball linkage sitting below the cover line. Most leave the cover out completely and some made a cut out just big enough so the linkage can move freely. Either way, the mechanicals inside the assembly box is exposed to outside elements which can cause