AKNick
640cc Uber Pimp
Made a small start emptied a bottle of medium CA into the plane. Anything and everything I could reach. One question to @AKNick what is your distance from the firewall to the front of the engine cowl, my measurement is right on 7 inches. Which means that from the firewall to the spinner backplate would be 7 1/16 with a 1/16 clearance between the spinner and cowl.
I'll have to get back to you on that. still working under the cowl