Jumped ahead a bit and did the cowling lips on the top and bottom of firewall so I could go ahead and mount the fiberfrax/firewall to the fuselage. I bought my engine mount for my io-540 with my tax return this year and am kind of stoked to see an engine on my bird for a little while.
I used an air saw to cut out the steel for my firewall and a dremel cutter for the smaller holes. Firewall installed and Red RTV is drying. All up to date for now 8)