Kenworth plastic dash tabs broken

Hello,
I have had the exact thing on the T800 that I drive. I've found the best way is to get a package of small black screws (to match the dash) with washers attached. Drill a small pilot on an angle into the corner of the dash. (the dash is thicker there) Hand tighten the screw into the hole. The washer will catch the corner of the aluminum dash panel, holding it firmly in place. This doesn't look that bad and it makes for tightly held dash panels.....no rattles!! Hopefully this works for you.

 

You could install some rivnuts , is the holes square or round where the plastic tabs go? Square ,then get speed nuts ,problem solved, they’ll work on the round holes just as well. You can get threaded or for sheet metal screws.