The title says it all! With the 2005 STi, the typical “Forza” brand front bumper and rear wings don’t have adjustable downforce but an aftermarket front bumper does, as does the Subaru “rally” rear spoiler (the one that looks like the standard STi rear spoiler with added vertical fins). They’re both the last selectable upgrade to the far right in their respective list, this might have something to do with the mix up?