I have a O-360 RV-6A with the -7 firewall. don't have the plans in front of me to verify the b, c,& d values. However, I found the penetrations for the throttle, mixture, and cabin heat to be accurate per the plans.
That said, I had problems with the plans location for the firewall-mounted fuel-pump. The location placed the fuel-pump mounting bolt directly in line with the engine mount tube, preventing installation of the bolt. I ended up having to remove one of the nutplates and install the bolt from the front with a nut on the pump side. So pump maintenance is now a two-person job.
If you have the engine mount, I would check for clearance with the fuel pump mounting. If you don't have the mount yet, let me know and I can take some measurements to help. It may vary on the tail vs nose wheel mounts as well.
RV-6A #20603:Painting and moving to the airport for final assembly. Getting very close!
PP SEL / A&P
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