The GKTECH CD/JK transmission spring kit will bring your gear stick back to life by stiffening up the shifter and increasing overall shifter feel. The kit comes with 2 sets of springs to suit your preference. To install simply remove the 2 bolts from the side of the transmission under the shifter assembly and install with your choice of springs. Fits all CD/JK transmissions fitted in Z33 350z and Z34 370z's