Installing 6.5" in the front doors

[MudfrogK5]

I ordered a set of Alpine Type S 6.5's and I do not see any way possible to mount these in the door. The way the speaker hole is cut out the screws will not even line up to 4 flat surfaces so I can drill them.

Everything I have read just says to drill some new holes. Anyone have any actual pictures showing what they had to do?

I planned on mounting them similar to this: http://www.lunghd.com/Tech_Articles/Electrical/Speakers.htm

I also have window cranks and it's a beater so I'm not worried about the "appearance" aspect. I just want to ensure it will hold in place. Would it be an issue to only use 3 screws?

 

[MTY Mouse]

set up trace and cut then run some sheet metal screws, call it done, I have 6x9's in my front doors. there ok, would be better boxed of course but they work

 

[NW-ZJ-SCOTT]

Trace/cut the hole. drill out 4 holes.

I have 6x9s in my doors. took an hour.

 

[MudfrogK5]

So your cutting a new hole for the magnet as well?