SMD VM-1, OM-1 Mounting Help

[Mikeruss22]

I have 2 VM-1s and 3 OM-1s I am installing in a Nissan Versa. I was thinking about mounting them into the headliner where the map lights would be. Its flat there and would fit all 5. I am not sure how I would secure them exactly.  I also thought about getting the single din kit template, a double and a triple. I am assuming I could mount those flat.  Any ideas on best place to mount them would be appreciated.  Thanks

[Mikeruss22]

I think I have figured it out.