Hopefully I'm not reviving a dead thread. This weekend I added the roll bar extensions to my CJ7 (with a YJ family style roll bar) I followed others instructions on this post, and used a 5/16" nutsert. The issued I was worried about was the soft top bracket connected to each corner of the windshield (see GoJomans pics). BUT....the extension bars fit overtop of them without any issues. The ext bar holes lined up with the big holes in the soft top bracket, so I basically just drilled the center of the bracket holes, and inserted the nutsert. I didn't have the "nutsert tool", but I made my own using a thin piece of metal with a hole big enough for the bolt needed for the nutsert. Next, I put a washer on both sides of the metal, with a bolt thru them, and screwed it into the nutsert. Worked great. I'm sure my post doesn't make sense without pictures, but i'll post some tonight when I get home.
My CJ doesn't leak oil, it marks its territory.