Simply remove the disposal and the ‘sink disposal adapter’.  Then install a standard ‘sink flange’ (6 5/8″) to the proper pipe size.

havent been able to find a flange of this size.

my plumber has looked

i’ve called every commercial plumbing supply place in town and nobody carries this

also did a google search and get either the flange to hook up the errator, the standard sink size drain, but no reducer.