Help with my dash holes

[Fatherflash]

I see some cracking in the corners, along the sides of your cut radio plate. In would strongly recommend you stop drill each corner, crack to lessen the chance of the cracks growing. Smallest drill bit you can manage is best. Place a 2x4 behind the area while drilling to support the structure. Low pressure on the drill while drilling. Yes, it is some pretty thick metal however, when this metal cracks, it is usually sudden and grows quickly. Doing what you can now to prevent this from happening is best in the long run.

See attached for more info.

My .02

Bren