In case you guys didn't see it. 417fox redid their double din install kit and it how installs with no visible screws. Might be worth doing now.
NEW 1990-1993 RADIO RELOCATION DOUBLE DIN TRIM BEZEL | 417 FOX
This is custom hand fabricated trim bezel fits 1990-1993 Fox Body Mustangs and allows the relocation of your HVAC controls. This creates a much more ergonomic position of your choice of 2-DIN Stereo options. Optional Fan Control Connector can also be purchased at 417fox.com. This is the...
www.417fox.com