Thats pretty close to what the Volvo fan I swapped in is. Its often called a 19, but really its more like 18.5.
https://www.240turbo.com/BrushlessFans.html
There is a ton of good information in this link, including the Vintage Air fan listed. They also have the XC90 Bosch fan I used, which is available in all kinds of things. I have the same fan in a shroud for like a 2005 Mercedes SL500. This is where I started when I put together my swap. Of course I have a terminator X which made my life easier on the controller side.
If I was going to pay the aftermarket price for a big PWM single fan, I think its hard to beat the DeltaPAG package because it comes with the brushless controller.
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1967 Firebird 462 580hp/590ftlbs
1962 Pontiac Catalina Safari Swapped in Turd of an Olds 455
Owner/Creator Catfish Motorsports
https://www.youtube.com/@CatfishMotorsports