So, had a great time at a track event, NHIS, with 04 Sti (7000 miles). After leaving, immediately noticed a creak coming from what seems to the rear window area on un-even pavement, slight bumps, driveways etc. It appears hammering the car around a track loosened up something, like the rear window seal....

So having tried some silcone spray etc with no results, it looks like there are some benefits to a rear strut brace which could help with the issue.

Any recommendations, I've looked at a Cusco carbon fiber and Sti aluminum/pink rear strut brace to date.

Thanks.

S