Once the fitment was good, I fitted pyramid sound dampening foam to the bottom of the seat area, it's held down by the bolt removed at the beginning. Then I layered the MDF boards with foam, glue and staples then did the same with the upholstery. Top part I used sound dampening on the back of the board also. I then added a rubber edge piece at the bottom to make it a nicer finish. I then connected the bottom and top together from the boot using the brackets with black nuts and bolts.