This picture via Nico / Slideways @ Autosport.com shows the unique double stacked radiator arrangement with the mercedes sidepods. This explains the splitter seen inside the sidepod inlet, which I queried in my earlier analysis (https://scarbsf1.wordpress.com/2011/03/18/mercedes-w02-preseason-side-pod-exhaust-update/).
More analysis and properly hosted image to follow.
Pic sent to me via @shamelessgeek and http://forums.autosport.com/index.php?s=aee026f80a1aef790bb8a86f6f1a61f4&showtopic=144440&st=120&p=4907785&#entry4907785
Scarbsf1's Blog 
3.5 hours to FP1… great work Craig, as ever.
I wish the BBC would recruit guys like you to the team.
Craig,
Has anyone seen the new Mclaren floor and exhausts yet?
Keep up the good work.
Oh we saw it today lol!
You sir are a scholar and a gentleman. I thank you. 🙂 This is really awesome what you are doing…
best f1 technical site so far. Keep up the good work 🙂
Hi Scarbs.
That pic (and the Williams gearbox one) was taken by myself, not Sutton Images.
Cheers,
Nico / Slideways @ Autosport.com
PS. Have more Hi Res tech shots if you need anything specific PM me at Autosport.