looking for something like 4080's box
 

4080 doesnt make the box for kicker L7's...any one know people that can make custom subwoofer boxes exactly like 4080's but that will work with L7's

Check with your local car audio shop.

How much deeper is an L7? would it be possible to use a 4080 box and make a MDF ring(s) to spave the L7 out farther? Does the L7 use the same box volume?
Just thinking out loud.

Kicker L7 is square... no way to make a square woofer mount in a round hole. as for making a box like this... you could give it a shot yourself... ithe supplies are probably fairly cheap, and if you mess it up, then you can pay somebody to do it

Oops, my bad. Didn't realize it was square.

Where you from? might be able to work this out

I am selling a custom false floor box with a W6.. check it out in the classifieds if you are interested.