Installed nutplates on the firewall to mount the main contactor, two fuseblocks, and over voltage relay. Thought it would take less then an hour, but took a few. The most difficult part was drilling through the stainless steel firewall. There wasn't enough room to use my "super" cobolt drill bits, so I was forced to use regular high speed steel bits, which require a lot more pressure and time.
I also installed the nutplates on my instrument panel a few days ago.
