I got them out, it just took a lot of time and patience. The whole setup works, Empeg plays through both the speakers and subs and so does the HU.

The only problem now seems to be getting everything back in the dash. It looks like the wires are getting pressed up against the back of the metal frame and the HU keeps popping out about 2 inches every time I push the whole thing on the dash. Have any Miata owners or cars with a very small space in there happened to find a way around this? Did you find a way inside the back of the dash so you could guide the wires to an area where they'll fit? I've looked through miata.net but I haven't found anything that covers this problem yet.

Thanks again