Don't use MDF. Thats too much overkill. I just did this a few weeks ago to my car and thats why I am saying this. Go to Best Buy or any other big car installation company (I guess even your local audio store) and ask for a black peice of plexi-glass it has a name but i forgot it. you can buy a sheet by 12" x 12" for like a few dollars and take a rotor tool and cut out the size of the hole you need and then make skrew holes so you can mount them in the existing skrew holes. Its not hard at all except measuring where the holes are at since you can't see the holes when you put it over the holes. But thats the hardest thing you will find. Also, the plexi-glass I am talking about is like 1/4 of an inch thick so be sure not to strip your holes on the plexi-glass like I did. It sucks.
|