The original AE Finder should work on RZ II bodies - the one that won't work with them is the PD Finder. I always assumed Mamiya tried to dissuade people from using the older AE type because the latest type has an improved spec which was specifically designed with the RZ67 ProII in mind; of course, the notion that they simply tried to scare you into spending all that extra money on the new version is not true, ahem! The Finder I've always wnated to try on my RZ is the RB metered chimney type but I've not got the Connector Cover which is required for attachment. Bummer!