Camper shell repair?!

Looking to repair this crack ASAP. Would love some options. Going to tackle this myself. It’s a Leer topper not even 2 months old. Should also add I’m getting this wrapped not painted. Just want to fill the crack.

 

Lot of work. Has to be ground out, fiberglass matted front and backside. Then fiberglass filler, finishing filler. Then primed, paint, clear, blended in to rest. The whole topper should be cleared, otherwise you may get halo around repair.

 

my dumbass didn’t add I’m getting the shell wrapped so could care less about looks just want to clean it up and fill the crack. Any ideas?

 

Still has to be renenforced with mat/resins, then finished body work, primed. Otherwise it's going to be seen.