This material has a nice fabric-like surface & is about 6mm or 1/4" thick. It comes as a roll of stickyback material & is guaranteed to fit our favorite Datsun models. It is made specially for this underbonnet application.
I got mine from Scots Old Auto Rubber & i think that it makes that underbonnet area much more tidy.

The blurb that comes with it says that it reduces engine noise & also reduces the temperature of the bonnet which in turn improves the life & appearance of the paint. Well, umm,,, OK, that works for me.

This is the original bonnet that was crunched in the accident, but it was the only rust free one that i had, so the Nice Car Doctor spent almost three days on it [$$$, damn] & now it's perfect. Oh yeah, i found a good one later. [double damn]

The bonnet latch mechanism & the prop rod will probably end up being chromed. Thats the worst part of a job like this. You fix up one thing & the part next to it looks crook, so you gotta do something about that too. Thats when the $$ mount up. Oh well, such is life.