@fita1100d
Great hack! I'm thinking of single CPU slot, designed well enough to mount a card lying down inside a standard A500. A quick measure up of parts I have here suggest it'll fit ok. It may even be possible to adapt a small zorro II card as well as a CPU card...
Anyone have an idea where to get the card connector strips from? I have done a quick search on the Dick Smith and Jaycar sites here in Australia with no luck...