has anyone seen a sti roof wing on the evo or evo vortex on sti and does it bennifit for either one.

 

I can't imagine either of them would work on the other car as well as they do on the correct car. I'm sure Mitsubishi and subaru spent time figuring out what setup would increase the roof downforce. Plus the cars would have to be the exact same width for the other to fit on it. If you were bored enough you could experiment, but why bother. I think the vortex generator looks a lot cooler than the Subaru version as well.