Parts List:
Joystick: https://www.amazon.com/gp/product/B00OS4U35G/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
500k potentiometers: http://www.ebay.com/itm/2Pcs-Mini-Pots-18mm-Split-Shaft-Audio-Taper-A500K-Electric-Guitar-Potentiometer-/192029611906?hash=item2cb5db5782:g:94kAAOSwZ8ZW4fY~
The 50K pots on the original joystick need to be replaced to be compatible with the 500K the 5200 is looking for.
Case: http://www.simcobox.com/150×75-desktop-plastic-enclosure.html
Look for a 200x170x65mm case.