This Combo includes the Kartboy WRX Short Shifter and Kartboy WRX Shifter Bushings. You only need to order this to receive both parts If you have the factory Short shifter Kit you need the Regular Impreza Shifter. Please verify which shifter you need before ordering. If you have any questions on how to check to see which shifter you need feel free to give us a call The Kartboy Short Throw shifter replaces the stock shift lever in 1997-2004 model year Subaru Impreza vehicles, including the WRX, Outback Sport, Legacy and Forester. Overall shift throw is decreased by 40%, providing a noticable difference and a solid feel. Constructed of CNC'd and TIG welded 4130 Cr-Mo steel. Installs with simple mechanic's tools in under 30 minutes. Made in USA.