what is this?

[loveless]

the tank in front of the valve cover... what is that?

http://www.zilvia.net/photo/showphoto.php?photo=2437&size=big&password=d3ef7f6db4f070b7fd5ccadf55d62e9b&sort=1&cat=501

[Yoshi]

Looks like a custom oil catch can to me...

boy am I not a fan of those blue windshield wipers.

[bhmve]

thats exactly what it looks like.

just look at the lines that lead into it.

[ThatGuy]

Catch Can.