[barnoun]

If you mean the grey center section on the trunk of some B14s, it was available on the '99 SE-L. Go to a dealer or junk yard to get one

 

[barnoun]

The black piece that looks like carbon fiber is found on most XE model B14 sentras. The light gray piece is found on SE-Ls, as stated earlier. As for the tailights without the orange turn signal(what you call the "grey taillights"), those are also from the SE-L, and maybe on the '99 SE too.

 

[barnoun]

martin_g34

Thanks for clearing that up...I was confused thinking they had two different SE models that year, but I guess not