Body/frame removal question

[jimmys87SS]

I'm in the process of taking the body off of the frame and most of the bolts snapped off even though I soaked them for several days with liquid wrench, my question is the number five body mounts that sit just in front of the axle I cannot seem to get those loose they're just spinning just curious if anyone cuts a hole on the top to access them if so does anyone have a picture I can't quite place where I should cut the hole

I'm not surprised I'm having a tough time my car was pretty Rusty to start

 

[Sweet_Johnny]

Body mount replacement often leads to your exact scenario. I had the same issue with my El Camino and did have to cut things and make new caged nuts. I can't say where exactly the best place to access the #5 would be, though I'm sure a search would turn up many threads as well as diagrams.