It's coming through GSM performance, never heard anything about them so hopefully it'll be a painless process.
I'm thinking that the rear seats need to come out, mostly so that I'm never tempted to carry passengers in the back with a harness bar right in front of their faces. I'll be keeping the seatbelts and adding harnesses, but I don't want a fully stripped rear. I want it to be 'racecar for the road', so no bare metal.
Currently I'm exploring ways to mold carpet around foam for the sides and make a floor out of cardboard/lightweight wood. The idea being to remove everything behind the front seats, then create a smooth lightweight interior.
If anybody has experience of making custom carpeting for cars I'd love some advise!