FTLOG Man, don't raise it up in back only. You may as well just put drag chutes on your bumper you'll create so much extra drag. If you wanna modify it and make it aero so it saves you money at the pump, follow the dotted lines when you cut and remount the rear window at the angle. You'll lose a bit of space but you'll have something that really saves you bucks, especially if you are on the highway.
