If you google Bennington G series double Bimini, there are several kits available for install. You said to zip up to sports Bimini, are you talking about the cladded arch? If you design a boat, on Bennington website, they have a picture (#9) on the gallery page with a double Bimini. You should probably call your dealer and ask if it’s doable. Or if you are handy like these guys on the forum, you could probably DIY. Good luck