I got an e-mail from mishimoto about there brand new oil cooler. Looks like a quality piece. Some people make fun of them for having a fake japanese name and not really being JDM, but me personally, the pricing is always competitive, the parts are very high quality and the warranty is unbeatable so I get "some" mishimoto parts... check this out.
Nissan 370Z, 2009+ / Infiniti G37, 2008+ (Coupe only) Oil Cooler Kit, by Mishimoto
The install Video
Nissan 370Z, 2009+ / Infiniti G37, 2008+ (Coupe only) Oil Cooler Kit Installation Video - YouTube