It will take some work to repair that but yes it can be repaired. If you have not done any fiberglass work, it will be a trial and error. The main thing is to prep the area really well so that the new sheet of fiberglass and the resin will adhere to it properly. It will take several resin applications to rebuild the section back to its contour after sanding and shaping several times. If you decide to just replace it and your located here in Texas, i know of a guy that has a CJ hardtop in good shape. I recently bought one for $400.00. And if you DO decide to replace it, im looking for the rear window hatch frame that's not rusted through. Just let me know how much you want for it.