Ok!
Got the cross member out , no place at all to access inside.
I decided to cut a hole in it so I can put a new bolt and a nut inside that I can hold while tightening.
The hole was really easy to do with a Dremel. The pain in the ass was to take the cross member out (AND IT WASN'T NECESSARY). So now I need new bolt because I broke 2 the during the disassembly and the rest are too rusty. (Winters in Quebec are great, but really hard on cars).
Here are picture of the hole that I made.
