A few hand-made units were exported to Germany, Japan and the USA, where the kit-car marketing was attractive for many collectors at the time; those that remain in Mexico are owned by Mastretta.
Automóvil Panamericano car magazine's February 1998 annual edition of Modelos (Models, a special catalogue with information about every commercial model on Earth and since that year, a few pages dedicated to kit-car makers) featured a paragraph on the Unediseño Mastretta.