Fan shroud options for a 66 Barracuda

My shroud is out of my car right now, because of the accident. I won't be putting it back in because I couldn't find the right 16" 6 blade fan. I was able to get an 18" flex fan from a friend, so I'm going to use that for now.....the shroud will go on the shelf for now, until I get the right fan.

I could take a tracing of it onto cardboard or something, would that work?