Here is a review I made about Noico Red
http://67-72chevytrucks.com/vboard/s...d.php?t=814233
Here is the thread I had going when I was told about Noico Red by another member.
http://67-72chevytrucks.com/vboard/s...d.php?t=792007 whereas this thread is related more to stopping the drone of my dual exhaust, there are other tidbits of info here related to getting a quiet ride. Don't hesitate to ask any questions you may have. I really have gone the extra mile for a quiet truck and the stuff I've done is kinda spread out through various threads.