dash guage mounting Options

[swerve]

Heys guys and gals, am chasing a little help.

Has anyone out there mounted guages IN (not on) the dash above the glove box. Have seen a few custom jobs (not on celicas though) where the dash itself has been able to have the mounting holes (and I pressume the guages mounting bracket through the main support) drilled through the dash and are flush with the dash face.

Any suggestions would be greatly appreciated. On this mounting way or any other mounting that doesn't require pillar mounts (don't like the lack of vision it creates).

BTW, guages required to mount are boost, a/f, and oil pressure, so the single din unit won't be usable.

Thanks all!