This kit contains :
RetroStone2 Injection molded front case with joystick hole
Joystick SMD part to be soldered.
This kit requires soldering if you want to use the Joystick SMD part supplied. Though if you have the pro version, you can also use a PSP3000 replacement joystick which connects to the FPC connector (it might requires some steps to fix the joystick so it doesn’t move).