Onward with sound deadening. I screwed up on my order and bought 1/4" closed-cell foam mat instead of the 1/8" I'd used before. That's a comparison between what I had left over and what I bought. It's fairly expensive stuff, though, so I ran with it and hopefully it won't be a problem when laying the carpet. I did a couple test fittings and I think it'll work okay. A few pictures of the whole process, which is basically just a lot of measuring, cutting, sticking.
Oh, I was clever and did this with the leftovers. Should've thought of it weeks ago.
As for the weight? It's heavy stuff: 1lb per square foot. I didn't measure, but I'd guess there's probably about 20lbs total in the car.
Santa brought me the ACC carpet kit, which I'm diligently avoiding installing at the moment, since I don't yet have the nerve to start cutting it up So I decided to start cleaning up the rear deck a bit instead because it -- like everything else -- was disgusting. Shots before, after using detergent, and finally the steam cleaner. Still not entirely happy, but I may call it good enough until I get around to stripping and painting the rear deck.
My great victory for the night was on the wheel well and tower vinyl trim. Even after scrubbing and steaming, it was still deeply dirty and stained. On a whim, I tried wiping a stain with acetone, which took the stain and a lot of accompanying grime right off. I went through 6 paper towels that all look like that one before calling it an evening, but already the trim is back to life! Too bad about the rips, but I can put off replacing for a while until the budget allows.