Installed this top on my '90 Miata this morning. Took exactly 6 hours, including a break for lunch, with a very good assistant (son in law) who has some savvy. All parts were in the box. Only "mandatory" purchase was some waterproof adhesive tape. Didn't need additional rivets (attached the rainrail to the top without rivets). Didn't need RTV. Instructions furnished by Duetto were complete and accurate, and I did not need to refer to my '90 shop manual section on "Top." Top fits very snugly. Pleased.
Jim Stuyck