I walked into Perfectionist Auto Sounds here in Anchorage and found out that they own a deadener company called Soundskins. Soundskins offers a few neat products, one being a multi layer deadener with butyl, foil and foam. The other product that I am going to pick up today is a setup similar to FAST rings, but is made of closed cell foam. CCF is waterproof and also will direct sound better than an open cell foam and the cost is the same. Check them out:
https://soundskinsglobal.com/product...ngs-2-door-kit