That's the thing, i'm not too sure.
I'm hoping to see a picture of something and think, "yeah, I can work with that, just trim a bit here and presto"

I haven't got a pic of my doors (Nissan NX-R) so i'll use the VR setup as an example (similar).
Basically, I want to take out the grille pieces and mount a pod inside the existing pod, if you get what I mean.
Not ideal I know, but I really, REALLY don't like modifying things in my car that aren't easily reversible because parts aren't that readily available.
I'm also not confident of building my own, and don't want to pay someone to do it either, it's just not worth it to me (not to mention probably damn near impossible to find a local to do it).
If you could post up some pics, and if possible some measurements I would appreciate it.
Just throwing some ideas around at the moment.