if your replaceing the SS to manual in a 5th gen you need the 5sp ECU (red learn key for immobilizer) trans,right trans mount,speedsensor, flywheel + bolts) shift linkage,pedals ,shifter &boot , gauge cluster if you don't like the PRND4D321 on the dash you can use your auto harness and just leave the trans stuff unpluged just have to locate the reverse light wires or get a manual one.