I just did this a week ago, and posted it here.
I had all the same problems. And I tried my 400 ft/lb air wrench.
This is what worked:
My 1980 is what is considered a type 2 in the factory manual.
It has a 10mm hex allen (not a 22mm nut like mid 70's).
For sure it had never been removed before.
It is held with blue loctite.
Minimum 2 foot breaker bar, 3 inch extension, 10mm hex.
Believe it or not, the manual (I have a printed copy from the dealer)
says to let the steering lock do the holding for you. I did not want to either, but the book says yes.
I did this by myself.
Seat the 10mm deep and firm, let the breaker bar rest on the wheel.
Take out all the slack, press firmly on the breaker bar and slowly turn
the nut.
If you have the 22mm nut from type 1 I am sure it will work the same, but I recommend a 6 sided socket, not a 12 point.
http://www.peachparts.com/shopforum/showthread.php?t=274896&highlight=remove+steering+wheel