I just finished re and re ing the dashboard on my 76 midget. One thing for sure, if you don't have to take it off, then don't... it's not a fun job.
On my car there are three screws holding brackets attached to the bottom of the dashboard onto the firewall. These are very easy to deal with, however there are also four bolts which are part of the dashboard and which go through the flange under the windshield to secure the dashboard. The problem is that these four bolts are along the upper edge of the inside of the dashboard. Unless you are made of rubber you are going to have a hard time reaching them.
Being a novice at this it took me two hours to get the four bolts off, and an equal length of time to get them on.
If you have a fax number available I would be glad to fax you a drawing from the restoration manual I have which shows all this stuff.
Taking some of the instruments out of the dash would probably make the re and re easier, but that creates problems of its own.
I am not sure if your 79 is the same as the 76, but that was my experience.
Good luck, you will need it, along with a lot of patience.
Regards
Al /ubbthreads/images/graemlins/canpatriot.GIF