67 dart fan ??
eBay recent auction.
"22 inch fan shroud, fits 1967 A body dart or barracuda , 273 or 383 according to galins book , part number 2785312 , it is in good shape other than a ware mark on it and the plastic is a little faded. check out my other auctions ."
http://www.ebay.com/itm/1967-cuda-d...D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557
The little angled area pictured at lower left is clearance for the ends of a OEM hose clamp. It would be at lower right when installed of course.
See the offset in the round center opening is only left to right. There isn't an offset in that opening top to bottom. So a slant 6 shroud installed upside down correct the offset and throws that little angled spot to the top. OEM clamp with its limbs rotated down or a gear screw clamp and you're golden.