Where on the drivers side firewall is a good spot to make/drill a hole about 3/4"

I know about the passenger side hole, already have that kinda filled up...

I need to run some wires and a vacuum line for boost gauge/controller.

Thanks in advance for any pics, tips, or tricks.

 

Under the steering column.

 

Since the engine is out, I can see why that's a good spot. Time to get the hole saw out!

Thx...