here is the FABO post that goes into detail on the Contour fan,
the parts list / wiring is in the attachment in this attachment
26" Radiator electric fan mods. What fits?
as I mentioned previously, I just did this fan install in a slant - 68 Barracuda with a 24 inch Champion radiator.
Slant motors a challenged for space between the radiator and the water pump nose and the contour fan assembly is fairly narrow and fits with room to spare.
The shroud is a perfect fit top to bottom, but is about 2 inches wider than the radiator.
I bolted aluminum flat stock to the champion radiator shroud mounts facing outward, then bolted the Contour shroud to the aluminum flat stock, using the shroud mounts on the Contour shroud.