tubbing firewall for 22s on 1990 gmc

hi does anyone know if you have to tub the fire wall for 22"s I have 19.5 but its time for an upgrade I have a 1990 gmc 3500 thats body dropped on hydrauics, does anyone have pictures of the tubbed firewall

I would imagine so, my 19's were real close and 24's i tubbed alot. My 24's arent much bigger than a 22 outside diameter

Wanna sell your 19.5s?

they have been sold