Moving the 03 ICP sensor
 

Thanks, MDub. great info. I had heard that later models made it more accessible. I'll follow up on your info.

The 04.5 is probably the ideal setup, since it has the updated wavy oil rails, the ICP in the valve cover, but still uses the holder HPOP, so you can get the upgraded one from Dieselsite and drop it right in! haha