Great detail and excellent photos. I agree with @Cuppa, ditch the felt as it holds mud and water and never dries out. I used a car builders closed cell foam on top of the jing ping sound deadener- similar to the car builder stuff and its only the carpet now that can get wet.

How hard was it to exchange the gearstick bush? I have them n the shelf but have not gotten to it yet. Whats a brief description of the process please?