Basic design to mount a few 52mm gauges in place of the radio. Also, search tinkercad for uhlwoogi and you will find the design as well.
I made the holes 53mm and it works great.
NA_Miata_4_Gauge_Radio_53mm.stl | 35.4KB | |
NA_Miata_5_3x2_Gauge_Radio_53mm.stl | 39.8KB | |
NA_Miata_5_Gauge_Radio_53mm.stl | 39.5KB |