nice description howie

just to add to comment, all 'holes' at the door should be covered. either u can use plexiglass or add another layer of sound dampening to cover up the hole. this is to ensure that midbass is 'seal'. Must also treat vios plastic door panel as they vibrate and induces alot of noise.

definitely but rewarded with a more quiet car while driving.

pm howie lor... hahaha... or there are ppl who are selling sp materials here @ garage sales

STP is a very good product but very expensive not suited for budget ppl like me.

One must always know the basic of soundproofing and sound dampening. Diff materials are use for different place and for different purpose. So if any of u guys just slap 10 layers of any butyl-based soundproof aint gonna make ur car quiet. U need ccf and mlv to do that job