For 3 days I've been squirting the bolts with AeroKroil and tapping them with a hammer and punch. I got the 3 post cat nuts off (2 snapped off and the only way to get to the 3rd was with a dremel) and the O2 sensors were broken loose but still in. It was finally time to attack the 6 engine bolts. Was not looking fwd to that because if even 1 snapped off, it ratchets up the project.
I used a 6 pt socket on a 1/2" drive ratchet. Began with steady pressure. 4 of the 6 popped loose. I shot some AK on the 4 and tightened them back up. The 5th bolt came loose, so I oiled it up and tightened. The 6th had me worried. I sprayed it a couple more times between attempts. I changed my attack by 180deg and she popped loose. Oiled it up and retightened. All 6 then easily came out.
Thanks for all the suggestions. I was very concerned about this project but you got me thru the hard part.