I just put 606 fan/clutch into my 300D, and I really like the way they work, as well as the price. The fan came from amazon for $25 and the clutch (Koolman brand) from an Ebay seller for $47. It moves a lot of air.

I can give you links/details if you want.

__________________
RenaissanceMan Labs: where the future is being made today.

Garage:

2017 Chevy Colorado Diesel (nanny state emissions)
2005 Volvo S40 T5 AWD, 77k
1987 Mercedes-Benz 300D turbodiesel, 4 sp auto, 156k - 28.7 mpg
1996 Tracker 4x4, 2 door, 16v, 3 sp auto. 113k - 28.6 mpg

WARNING: this post may contain dangerous free thinking.