I once did a re-edit of the Japanese cut by replacing the bad scenes of the amateur American Air Force personnel with the Alaska scenes from "Gammera The Invincible". I need to upgrade my software so I can do it again with the new Blu-Ray releases.
From the Blu-ray box set from Arrow Video: arrowfilms.com/product-detail/gamera-the-complete-collection/FCD2014 The box set is sold out , but Arrow is going to re-release them as Heisei Era and Showa Era sets on January 24th. Highly recommended.
