I might add that if you have rust issues under the car, be prepared for some serious escalation issues. If is clean underneath, you should be ok.
Larry, thanks for the thread. That helps. No rust at all that I can see anywhere on the subframe, rocker panels, etc. Everything seems very solid, so I should be okay.
I found these instructions on another forum (I believe it was for a Chevelle, but lot's of 1st Gen Camaro owners were chiming in as well). The interesting thing is that they mention no need to disconnect steering from the gear box.
"first soak the bolts ,you'll need to do this many times.. get them all to turn first.. and make sure the caged nut isn't just turning with the bolt.. after you know they'll all turn.. then get the car on 4 stands.. loosen all the bolts on one side,jack up under the rocker with a 2-4 between the rocker and the jack..unbolt one at a time and replace one at a time.. no need to undo stearing or brake lines..your only jacking it up 1/8th to maybe a 1/4 inch up off the frame.. add antiseaze to the new bolts and tq to spec. do the same to otherside..."