You'll also need a second exhaust hanger/mount for the right side and some mount brackets for the valance if I remember correctly.
I might be interested in trading you my gti valance for your golf if you'd be interested. Also, I build muffler deletes unless your having one built locally. It'll be a little while before I can build them to ship tho, since I don't have my jig built yet I build them on the car