I notice that a lot of you are running the GT3 Front Bumper w/out a rear spoiler. According to Suncoast's site "Porsche does not recommend installing this bumper without adding a rear spoiler." What are your thougts on this?

 

I got the GT3 bumper added without the wing first, at normal speeds the car was OK. I had no problems up to around 70-80 mph, after that the cars rear felt unstable. When there was wind, I could feel the moving from left to right...

After adding the wing, it felt much more stable. The butt of the car had enough down force to balance it out.