Sweet! You even get to use a part of one of your rack mounts (I believe), awesome!
Yeah... with my Akropovic exhaust system it is titanium with a carbon end cap. I took out the plug after my first trip and haven't looked back. I love the deep ruble these pipes produce.
There is no way you can keep that plastic on there! I know you will be making a carbon piece! In fact I would be you have already started