:werd: I had this beat up little 89 Civic HB that I bought for like $600 to drive while I was building my current car. I replaced the carpet in that with a good rubberized molded one but when I took it out I removed all the seats, the seat belt attachments to the floor, all of the console stuff, pretty much everything. Also where the center dash attaches to the floor, you'll have to remove that piece also to get the carpet under and behid the dash... it's really simple there's like a fill piece of metal framing that bolts to the dash part and then bolts to the floor.. just remove that piece and the carpet will slide right under.

I went a step further and cleaned it up real good because it was like a sand box under the carpet... by the time I was done cleaning, it looked like it just rolled off the assembly line.

The floor already has a sound buffering material that is a lot like that dynamat stuff that all the bass heads use with their monster audio setups so there really isn't a need to spray it with anything unless you just want to add more weight to your car.... I know it's not much but every ounce counts