I just installed my T-Rex custom grille on my Embark but it will work on any Seneca as well. I went with T-Rex but there are three other people that make nice black out grille options as well, RGP, Strut and Caliber9. Caliber9 has some really nice options for lights and stuff but I found them after I ordered T-Rex.
T-REX
RGP
Strut
Caliber9