Welcome to the forum mrpaulo.
You will not yet find a system ( 2 channel ) with 4K cameras both front and rear, but in 1440p you can do that just fine.
The sensor housing you have they do add a little to the "challenge" of selecting and installing a dashcam system.
Some have mounted on the actual housing and then just have the lens peek out below it, this way only the lens are visible, so that is just 1/3 or maybe 1/2 of the cameras footprint. BUT ! i think most that have done this have done so with one of the wedge shaped systems.
But you will need that part of the housing to be fairly flat to have enough surface for the mounting tape to grip onto.
Alternative, you could put ( glue ) a strong magnet on the inside of the sensor housing plastic where you like to mount the dashcam. and then on the cameras mount put a piece of sheet metal for the magnet to grip onto ( it would also be a idea to maybe have a thin rubber on the metal plate to increase the friction against the otherwise "slippery" plastic )
I have myself for years used a neodymium magnet to hold a rear camera in place on the metal rear hatch on my dirt cheap little Japanese 5 door hatchback.
The other option are to mount offset to a side of the sensor housing, this is also possible though you have to go a little out from the sensor housing to not have part of it in frame with the wide angle lenses all dashcams use.
To get ideas you can browse the picture heavy " where did you mount your dashcam " thread.
https://dashcamtalk.com/forum/threads/where-did-you-mount-the-camera-post-your-pictures.502/page-66
