I want to custom install a 3" diameter boat style glass compass built into the glare shield either directly in front of the driver or centered on the glare shield. I'll be cutting a 3" diameter hole in glare shield and the compass would be about 1 1/2" Deep. Does anyone know if there is room in...

Just recently rented a car (Mazda3) with compass/altitude/longitude/latitude gauges. I liked them. Has anyone installed aftermarket gauges such as these in their E? How installed? Manufacturer? Thanks in advance!