Viscous fan package?

Jimacuda said
Pentastars and pn's...im sure.
There are 2 different factory flex fans, 18 and 20 in. that I'm aware of. Probably more, these are what I've found.
View attachment 1715543245

Wow. Do you have any idea of what year and what package had those fans? That’s similar to the fan I use, but mine isn’t OE.

Like I said, I’ve never seen that, but I haven’t seen it all by any stretch.