Not sure if this would help anyone, but I found the site in my searching.
http://www.print3dd.com/3d-printing-dual-extruder-yoshi/#
I borrowed a micrometer and calipers to get those measurements, while we were preparing for this contest. I no longer have access to them.
http://www.print3dd.com/3d-printing-dual-extruder-yoshi/#
Vulpes Abnocto, one more question about the base that wasn't covered in that description:
On the top piece of the base, how wide is the "cap" and each individual ring of the "neck", and what's the spacing of the rings?
I borrowed a micrometer and calipers to get those measurements, while we were preparing for this contest. I no longer have access to them.