My "new" '74 Duster- or why I need a project like a hole in the head

I'm glad you're happy with the Contour fan setup. It's worked very well for me. I know the OEM ones last a very long time. The originals were Bosch. An OEM design is usually more proven out than the aftermarket ones. The contour V6 is a great example of 10 lbs of crap in a 5 lb bucket and having a small radiator opening, so this is a beastly fan. If anyone else wants my PDF, I'd be happy to e-mail it.