I attached 18 gauge metal tabs to the back of the dash – I used 22 gauge metal before, but the screws were stripping it too easily.

I also attached tabs to mount the speakers and speaker covers.

JB weld was used to secure the metal to the fiberglass.

Related posts:

Fiberglass gap fix for the Fiero PISA dash Prepping the Fiero dash for upholstery Fiero interior has been dismantled Fiero custom centre console