I am replacing the brake booster in my '87 wagon with one out a '92 junker at Pull-A-Part. At least that is my goal. All that is left in retrieving the part are the 4 nuts under the dash. I had to abandon the job for today because I cannot get to the nut at the upper right - I can barely see the blasted thing! There seems to be no room to get my hand up in there - it doesn't help that my hands are big to begin with. How do I accomplish this? Thanks!
Jim

Get a 12" extension and a deep well 13mm socket. If you don't have a deep well, then put your stubby on there and don't pop the extension in all the way. It is possible, but uncomfortable.
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1980 244 diesel M46 168k, my 4th 240

To add to cbdb's post, what you can also do before you put that short socket on the end of your extension (not fully, of course) is to put a wrap of electrical tape around the end of the extension and that will help the socket to stay on the end a little better otherwise it can easily get knocked off. Another trick is to put a dab of most any kind of thick grease in the socket before you put the nut in and this will hold the nut in place a little better as well. Good Luck!