Yeah most people miss those.
There are also a couple of bits that go in the intakes.
The little tank tread & another bit I just realised I have not added.
I used the Kyrlon fusion Pewter Gray myself. Look for 'TOS Viper' in the built section.
I also did some comparisons to 'deck tan' which was also pretty good, but as the name of the paint suggests, I felt it was just a hint less gray than I liked.