P/B Help Please

[greg72]

I have found a factory power unit in the junkyard. I have now locted a company to get the parts so that I can get the brake pedal to power unit pushrod fabricated. Now what I need is to find a grommet for where the rod will go through the firewall. The manual brake master cylinder bolted to the firewall directly so I am looking for a source for the grommet. Anyone have any ideas?

I have added a pic of my project as it was when I got it.

Thanks