On my '89 the procedure goes like this:
remove two bolts and two flange nuts and remove the glove box from the engine cover. unhook the two latches at the bottom of the engine cover
Pop the hood and back out the two captive screws that are near the top of the firewall. I use a large screw driver, but I hear the tire tool works as well.
Get back inside and wrestle the "turtle" out from under the dash. Mine happens to be a tight fit. I have to turn it a bit and lean it just so to clear everything, but it does come out. Once you've done it a time or two, it's no problem.