OK thank you for your message.Yea in all honestly its perfect to replace an old screen if broken and you still want to use mazda system. Since mazda oem price is probably 4x more given oem proprietary parts. Should carry everything over as is.
Just communicate with the seller to make sure all installation parts are includes specifically the metal bracket to bolt it down to.
I'm still thinking of replacing the touch screen, there are touch screens on AliExpress for $20. But replacing it, I'll have to disassemble the screen further.Just keep in mind these unit feels more fragile than the oem since you dont have the massive metal skeletal frame protecting it and stiffening up the body. The bolt down bracket is just a bottom screwed on piece on the new screen so as long as noone pushes or pulls on the new screen you should be fine. Feel free to post installed pictures here if you get it done, would love to see it installed