I am a new member to the SWPC , fairly new to the aviation world, and a proud SWP owner!! I have many questions but have been trying to utilize previous discussions on the site and have been finding some great information, and anwsers

One question i have. For a converted 1957 pa 22/20 with lyc 150 , where would you find or which C OF G envelope do you use? The pa 20 or 22 or should there be a different one?