Well I decided to try my hand at making a portable.
I had a Genesis Radica Volume II lying around and I found this at a gas station for $4.:
Now what does this thing look like on the inside and can I use it ?
Hmm doesn't look bad , but not a whole lot of room in there.
So I went about making the case more accessible. First take it all aprt and remove the battery packs.
Now take off the front panel and disconnect the controllers from the main board.
Hmm looks like with a little work the front panel could hold a 2.5" screen.
And what do you know it will.