The T-Bird Stocker, which was first released in 1990 and based on the new 1989 Ford Thunderbird body styling, has went through three different casting changes. So far, the first version has been used from 1990 to the present time. The two other casting changes are detailed somewhere else. In this release, the lower edge of the airdam is level. It is also not to be confused with the casting named Thunderbird Stocker, which was first released in 1984.