Fan shroud for aftermarket 26” radiator

Now that the weather is warming up here in the summer of Alaska I’m thinking I need a fan shroud on my duster. I’ve got a 180° thermostat and it runs perfectly at 180 while I’m driving, but as soon as I come to a stop and sit at an intersection or something the temperature starts climbing. because I’ve got no shroud. what’s a good source for a shroud to fit this configuration?
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