Clutch Master Cylinder Location

[Ky69Mach 10]

I received my hydraulic master cylinder kit today, going to install tonight. Any idea where to drill the lever hole in the firewall. I don't have a knockout since this is a automatic car. I do have to be what looks like a dimple or punch mark poking in towards the interior of the car close to where it looks as if the hole might go. Any help would be great.

[buening 63]

The dimple is exactly where I put my Modern Driveline LF series M/C. The instructions stated to drill the hole there, but not sure which m/c you are using.

[Ky69Mach 10]

It is modern driveline as well. I assumed that was where to drill, but you know what the say about assuming. I wanted to make sure. Thanks buening!