What [MENTION=115347]gamefreakgc[/MENTION] said post 100.
I did foilback 2mil thick mastic top to bottom side to side front to back,
1/2" thick foilback foam above headliner, cargo area rubber mat, residential carpet pad, cargo area carpet, OE accessory carpet mat,
queen size egg-crate 1-1/2" mattress pad here n there. Needs more.
This time every nook n cranny between inner body panel and outter body panel
C pillar back getting stuffed with foam, doors another layer.
My second go round is basically his using of layers of foam in right spots & foiilback mastic or not.
Get that right the first time your GtG.