Pictured below is Graham's composite firewall, installed, with the engine mount in place. It comes as several mouldings made in composite material but using a phenolic resin rather than the normal epoxy, like the aircraft firewall itself.
It extends over the rudder cross-tubes, requiring holes only for the rudder springs (and anything else you need to pass through the firewall, of course).
Graham can still supply these, he is at mailto:grasingleton@avnet.co.uk
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