Get someone to help (maybe two), but yes you can get a winch on there. I put my w12k on mine with the bar still on. PITA to get the bolt holes lined up, but it did work.
Advice, go buy some extra-long mounting bolts of the same thread pitch/diameter (don't remember off top of head). You can use those long bolts to secure the winch in the proper position from a greater distance away, and then use the provided bolts to mount.
UZJ100 "Mama Kuiser" built to look cool for the soccer mom
FZJ80 über rare "Geen", cloth'd & locked