On a budged or not, short shift kits are one of the best upgrades for your ride!
A friend of mine installed one on his E39 BMW M5 and the cars feels so much better now.
It will help you reduce the time between the gears with results on better performance.
Mighty Car Mods’s Moog and Marty will you give you a very detailed step-by-step guide on how to install a short shifter by yourself.