LMC truck or any of the reputable vendors of this era truck parts will have
A decent pad.
If you have one of the common interior colors you can order the pad colored.
Otherwise your going to have to paint it.

The glass does not need to come out.
You remove the gauge cover by removing the screws surrounding it
And the lower cover around the steering column.
Then the screws at the bottom of the cover along the dash paint line
Lift up front of cover and pull toward you and that will release the clips at the bottom of the glass.

I'm sure there's probably a U-Tube video out there.

Good Luck,
Tom