Here are some details of the covers you ask for. Like I said on the thread those covers were made first by cutting a template out of cardboard and when I got the fit just right I then transferred that to a sheet of 1/8" clear Plexiglas. Doing more fittings and sanding down I ended up with a very nice custom cut pieces.
I would like to add that if the plexi still has it's protective plastic sheets on them leave them on as you don't want any dust on them until your ready for painting and remember that you want to paint only the back side of the plexi and not the side that is going to be seen. I also added 1/4" spacers with Velcro on them to secure them to the bottom of the case and for easy removal.
Below is a drawing I did to illustrate the assembly.
As you can see the results are very clean and stealthy
Hope this is clear enough for you but if you have any questions let me know
Oh BTW the same process was used to create the side bay cover as well, but no spacers were used just Velcro.