Rockauto for the 2886 fan clutch and the 01-05 duramax fan blade. Not everybody has to trim the shroud either, I didn't until i changed my motor mounts.
Thefermanator can you give me more information on the proper fan clutch for tha Duramax fan modification? I looked up that part number (2886) on rockauto, but did not find that number or fan clutch.
Look up hayden 2886, that is the part number for it. Go to rockauto, do a part number search, and type in 2886, when the list comes up, scroll down until you see a HAYDEN brand, and thats it.