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Hi all, As soon as it warms up enough to be reasonably warm and/or I am willing to inhale propane fumes for a prolonged time, I'm going to pull the interior and do a few projects including: 1 - repair and repaint old interior Royalite, replace carpet and re-do arm rests and side leather. 2 - 2 runs of RG 400 in anticipation of ADS-B upgrades 3- pull old / unused wiring 4- pull old fiberglass - there is still some lurking and inspect tubular frame 5- if its as painful as I think it will be to pull the interior, I may replace the side windows then vs coming back later In terms of replacement foam, there's a number of kits available from spruce, etc. The cheap bastard in me says why on earth would I pay ~ 0.9 AMU for some pre cut foam. Spruce also have polyvinyl nitrile rubber foam as another alternative but this lacks the aluminized mylar backing that I would want to create a vapor barrier. My question to the group is 1) has anyone used actual acoustic dampening foam in an install? If so, what shape is best for the type of noise spectrum that our planes produce. I liked the idea of trying to deaden as much sound as possible as I value my toddler's future hearing and can't get her to keep the headphones in or earplugs on for more than 5 minutes a go. They go back in, but it's a struggle. I found a source here: http://www.usafoam.com/acousticfoam/acousticfoam.html The advantage seems to be that it has a fire resistance classification and has been burn tested (typically used in small enclosed spaces in California studios I suppose - so lots of regulation there). Also available in both rolls and 1-foot squares. Also unexpectedly cheap. The unknown is whether this type of has any propensity to retain water vapor. It's gotta be better than that pink $hit that's still lurking in there. Any opinions from the group? The same source also has what they call "gym foam" which is the same stuff that spruce sells minus the mylar wrapping. Figure that may be an easy addition with contact spray and aluminum tape. Plenty of instructables for aluminized mylar uses from the good folks of the "hydroponic" community. If I end up going this route, I'll post some details / pictures for the ultimate CB redo foam installation. Thanks and take care, Brad