I figured that this was a great idea so I am taking the liberty to start a string based on this. (Sorry if this is bad form).
I don't know about where you folks live but here in Ga. there are a few local shops that sell clasics. Now, I don't know how they would take to a bunch of us MAME nerds trampin in and taking measurements and then just leaving. But this is a source.
Then the question becomes how do we translate this into plans. Do we build it in 3DSM like the centipede cab and everyone guess at it or could we develope a standard.
I have spent some time this morning trying to go the direct route and contacted Atari. I am going after the original specs from the original makers. I figure that they have to have plans somewhere. Sure they might have some hesitancy in releasing the docs, but it is worth a try. I mean it is not like they are making these things any more. I was directed to the Milton Bradley office in Mass. They are not yet answering the phones this morning, so I will try again later.
Peace, love, and good happyness stuff all!!!