Floor sound proofing question

[Stvbrtls]

I am in the process of putting my 69 back together. The exterior is almost done and I have started on the interior. I got new molded carpet and a factory sound proof kit from GMC Paul's. I test fit the carpet and it fits great but I can not figure out how the 3 pieces in the sound proofing kit sound fit, and if the side with the white foam rubber goes on top or bottom and last does it glue down, if so what type of adhesive should.

As always any and all help is greatly appreciated. I could not have gotten as far as I have without all the help I have found on the forum.