The only pieces I glued were the rear bulkhead (3 pieces) & the pieces under each door.
The other carpet I took to an upolsterer and had him trim the edges in vinyl to look like carpet in the old English cars. I also had him sew "Thermo Tec" insulating blanket on the back of the firewall piece. I used short screws with trim washers to fasten the carpet (you don't need many). You just have to be careful of your wiring so you don't put a screw though it.
1) The glued pieces
2) Firewall and foot box side pieces
3) Trans tunnel
4) Driver & Passenger floor - I don't have a dropped footbox so these are just laid in and the seats hold them in place. With a dropped footbox you would have to fasten the drivers side at the front.