As mentioned above, everyone sells the same ACC carpet. Just shop for the lowest price + shipping. I did Stock Interiors the first time, Rock auto the second. Rock autos shipping was cheaper. Splurge and buy the mass backing. Carpet holds its shape much better. I think it is worth the money, having done it both ways.
Don’t by Dynamat. Massively overpriced. There are generic equivalents. I bought Noico from Amazon. Same stuff except way cheaper. Only difference was that the aluminum foil was a little thinner. Buy it in as big of sheets as possible. Makes the job easier. Use aluminum furnace tape to seal seams.