Welcome to the forum.
So the pins that the shoes pivot on have broken off?
Only option is to buy a used one. Lot of parts on the older models are no longer available new.
I will say that if you don't have an aftermarket 4wd lockout cable (Warn 424 or Wide Open) that enables you to drive in 2wd, you'd be best served to get good front brakes and just use those.
On a 4wd Honda, when you slam on the front brakes, it locks up the wheels, which locks up the driveshaft going to the motor, which is the same driveshaft that goes all the way through the motor to the rear wheels, so if you're in 4wd (or have an all-time 4wd machine like a 300, 350 Rancher, 400 etc) and you lock up your front brakes, your rear wheels will lock up too.
If it were me, I'd leave the shoes out, put the drum and cover back on, and spend your time and money getting disc brakes up front.