Please help me plan a nice front stage.

[Danometal 10+ year member]

The sound deadener you should be using has metal bonded to the butyl adhesive, and what I've seen is deadener applied to the back side of the hole, and then more deadener applied from the front side. This depends on how easily you can get your hand inside the door, or if you can take the outer door skin off.
The way I did it was to use sheet metal, rope caulk to seal it to the door, and CLD material on the sheet metal. 18-20 gauge metal is galvanized metal is good. You'll want to be able to cut it by hand. I documented it with a write-up.

* "material" I really need to watch my typos.

Hey!! I have some rope caulk!! I suppose sheet metal won't be so thick so as to affect the replacement of the door panel..

 

[Danometal 10+ year member]

Update:

I was on Sonicelectronix's backorder email list, and they emailed me today that these are now available:

Massive Audio CK6V 6.5" 2-Way Stage V Component Car Speaker System

So, I ordered them!! The guy on the phone said they got in 7 sets today, and I bought number 6. That's how fast they go. There's only one set left.

When I get them installed, I'll be sure to post a review...

 

[zako 10+ year member]

Based on reviews out there, these should sound very good.