This Go-Dap has a recessed 30-pin connector with a curved holder that is for the iPhone. To use it with a Classic, you would need a 30-pin to 30-pin extender cable of some length because the Classic is too big to fit inside of the curved body. That still leaves the choice of where to put the Classic when it is attached (velcro to the other side? Rubber bands? Not sure about that...)
Thanks for the info. Probably won't work for me without the Classic fitting into the Go-Dap.
Probably eBay flippers.