The Cutouts are not so noticeable from the rear.
I also cut off the exhaust tips and moved them further out and up in order to get a neater appearance. The gap was horrible.
My impressions of my build are this, A Success!. While driving at 70MPH it is so quite I now can hear all the annoying squeeks and rattles. It still makes noise if you get on it but the sound is outside of the car not in the cab. I will only have it closed during long trips or if I don't want to hear all that LT5 excitement.
when I'm cruising with the exhaust cutouts open there is drone in the cab just like the B&B/X-pipe system and now an even louder race car sound that every one knows your coming. I mean everybody! Even people in different states.