I had my local Trim shop apply Lizard Skin to the bare interior floor from the trunk to the top edge of the firewall.
There are 2 products and i had just one done on their advice.
The other product as i understood cuts down on the noise factor.
They had done a van for the OPP that they transfer subjects from the courts to jail. The vans had no insulation and they did both process with excellent results. Cool subjects, ready for court appearances.......
Kevin...look at Kilmat sound deadener. It's available from Amazon. Half the price of the big name product, works good. I did the whole interior on my restoration. If you need more info, PM me
Good morning, this is Terry from NOS Reproductions. If I can help, let me know, but I'll give my 2 cents regarding the above so please take it as you want, regardless of where you purchase your products.
Molded Carpet - if it's in the budget, I'd always suggest going with the upgraded 'Mass' backing. It's not original backing until the late 1980's for GM, but it makes the world of difference for heat, sound and a crisper, stiffer molded unit. We deal with auto upholstery shops across the country and most will order this way for jobs where they are providing the product due to getting a better finished product.
Sound Deadeners - there are lots of quality products, and also lots of pretenders I'm sure. In the end, most do the job the same but some cut easier, some smell less like tar and some stick better than others... and obviously lots of variance in cost
"If" you are installing a "molded" carpet over these sound deadeners, then I always suggest going with the the thinner options that are typically 1/16" thick. They will not distort the fit of the carpet. Some of the thicker ones 1/2" or more can affect the fit and finish of the molded carpet and hide the smaller details such as bucket seat bracket molds.
"If" your upholsterer is tailoring/stitching a carpet from scratch for you, then go with whatever sound deadener you like, he'll pattern it to fit.