Even that dash can be repaired.
Here is a link to a dash that was in pretty bad shape and came out pretty good. Not as bad as yours but with many of the same problems:
http://forums.bimmerforums.com/forum...pair-Pic-Heavy
This one shows how to fix the speaker holes and I like the finish he put on it:
http://www.mikemartinelli.com/index....g-dash-pad-fix
On your dash, the thin strip between the defroster outlet and the windshield will have to be repaired. I think marine putty with a splint, something like a plastic shim, would make it strong enough so you could then work with it. Regardless, if you have to repair that one, it is going to take a lot of time and patience. Maybe the best bet is just to watch craigslist; everything turns up there eventually. ;-)
I just checked on the Houston CL; there is one but the man thinks it is made out of gold; $300.