Those big plastic peices are your best friend. Its so easy to shine them up, you will fall in love! Just degrease them, use Simple Green or any other APC. And then use a trim product of some sorts.
For a nice look I use Stoner's Trim Shine. I had AMAZING results with this product on a 1997 Explorer Sport, and if over spray gets on the paint, its a breeze to remove.
Other products such as Engine Kote, PB's BnB, or most Vinyl dressings work well also.