Joe, I've checked lots of fans in stock at Advance Auto. "MOST" all of them list the part number/width and CFM. Of coarse the info is on the box and not on the fan.
I didn't have much room in my panel running the serpentine system so I used a sensor from Speedway and my neighbor gave me an electric fan off his blown 383 and it does a good job.
Dogface, you can put a "pusher" fan on it but I'm not sure how well they work. I did not like the pusher I once used on my '37.
I don't have much room in the 37 to run over a 14" fan so I'm going to a thin 16" electric that will cover the entire radiator and keep it cool in parades.
....maybe something I said will help someone??
