Front door speaker mounting brackets Ford Windstar 1998. Need Help.

[dirtyplan]

This is what I have right now on 1998 Ford Windstar. Speakers were never installed. Please see picture below.
I got 5"x7" speakers. How can I install it? Should I just drill holes in metal or there are other options like mounting brackets? Is there a part number? Where would I get something like that?
Thank you

[fasfocus00]

if installing 5x7s in that, I'd just put a bead of silicone on the metal (allow to cure) than put screws through metal. you can make a bracket but not sure if it'd be worth the time.

[dirtyplan]

They don't make some kind of bracket for this? Drilling only?

[fasfocus00]

They don't make some kind of bracket for this? Drilling only?

take a look at your picture and figure out where would a bracket mount with out drilling?

[dirtyplan]

I thought 3 square holes was designed for factory mounting bracket.

[goingdef]

I would just use some foam tape to prevent rattle and self tapping sheet metal screws to mount the speakers.

[dirtyplan]

got it. Thank you