After 3 months I have finally completed a Mini Space Invaders arcade machine which I made using a GBA SP and 6mm MDF. Joystick was purchased from Digikey.com part # GH7455-ND. Artwork was sourced from a few places and then photoshopped to fit, namely from arcadeartlibrary.com and vectorlib.free.fr. If you wish to create a cab based on the original cab design , then I would suggest checking out http://www.jakobud.com/index.php.
Video roughly shows how to make your own . If you need more build info feel free to email me at firstname.lastname@example.org and be sure to email me a photo of your completed project. You can also email me if you would like me to build you one