It's cake. If you ever replaced your clock with a boost gauge, you can do this.
Disconnect the battery.
Remove the top dash piece. It runs above gauge cluster and is held in by 5 screws. Once you get it loose, you'll need to disconnect 3 or 4 plugs for the odometer, the idiot lights, etc.
Pull off the plastic cover for the gauge cluster. No screws.
Pull off the plastic cover around the shifter. I remove the ashtray first and use that to pull it off. You'll need to disconnect the ashtray light.
Remove the right side dash piece. It's held in place by a few screws, I don't know how many. If you removed all the other pieces, you will see the entire edge of the dash piece. It's held in place by spring clips similar to what holds the center console cover down. Once you get it off, you'll need to disconnect a bunch of connectors. Nothing stock should be interchangable.
The head unit is held in place by 4? screws, all of which are easy to find. There are 2 or 3 wire harness plugs you need to remove.