Happened to be rebuilding a 1999 Riviera, newest and cleanest I have seen. Since there are a few folks working with these thought I would post this under base view....so clean and crisp under there....note the original silicone globs on the heating elemtent leads and the use of a Mater pstat (I can only assume factory original). The machine is badged Zg on the front and paper date and model label underneath.