I finally got my slipstreamer installed on my GTI 300. I had ordered it from JCwhitney, and received it in a short time.
The only problem was, I needed a 10mm adapter kit. JCW didn't have them but, they suggested Amazon. I ordered one from them and, about had a coronary when I received the next day.
Instalation was easy, took about an hour.
Will post pictures, but, being an old Florida rumdum, I can't figure out how to use my crayons online.
Will keep on trying.