Recently Frank 4X4 on receiving his new car mentioned "top & bottom spring gaiters & cat heat shields to be fitted"
Hello Geordie, Belated welcome 'Bonnie Lad'
A Simon said, we just love to tinker. More difficult to do with a new car. Just read some of the other posts, such as Dave W et al and the latent 'techno juices' start to flow.
Dave started the Gaiter flow and I have added some more. You will notice the springs on the front sliding suspension are exposed so when I heard of a local car having new king pins after 20k miles I inquired about the 'Gaiter History'. Being handy with a sewing machine I am running the prototypes in the photo from the Roadsters delivery. So far they have stayed nicely in place.

The Cat Heat shield was made and fitted to my 4/4 after the Wing Liner detached. This was attributed partly to poor adhesive choice (Rectified on new cars) and the heat from the Catalytic Converter (for 4 cylinders) under the offside wing (see photo).
The Roadster has two Cats in a similar location for 3 cylinders each. I will not fit the heat shields unless there is any hint of liner detachment.

I hope the explanation helps