Classic industries has an interior screw kit for 19 bucks that comes with 45 screws for the interior, part number sk1705. I'm sure with a little poking around you can find a cheaper kit for just the bezel. I personally like buying the bigger kits to have spares on hand.
I saw that screw kit from classic Industries but I was hoping to not spend $19.00 on 7 screws. I looked around in my hardware bins and found screws that will hold the bezel in place until I find a better way to secure the bezel and bring it back to factory stock. I had one heck of a struggle re-attaching the new speedo cable and gauge cluster lights. Not much room for my hands. Would there have been an easier way than from doing it from under the dask?