It can fit an N64 pretty easily, is smaller than a ZN40, fits PERFECTLY together (The two sides) and has all the plastic mountings for N64 buttons, a GC joystick, and a PSX dpad, plus holes and a hole for a PSone LCD.
Needs a little more bondo work, which I could do before selling. I just threw a quick coat of primer on it before pics.




Make an offer, keep in mind that a TON of work went into this. I am not desperate to sell, so if I get no offers, I may just keep it around.



(the light is the dent in the GBA screen)