Wash, Clean, dregrease, clean, pull off brackets and bits galspray and then gloss black them...
If you start buying aftermarket gear to dress it up it will either look cheap, will be less reliable than the std stuff or you wont stop spending once the bug bites you...
Nothing is better than a ultra clean engine bay, you could look at taking parts off like the crossover pipe or top half of plenum even and getting them powder coated silver,
Dont use silicon sprays like armourall that will just make dust stick to parts, post a pic up and shows us what its like