Redundancy and Overkill time, (best reasonably priced thermostatic cooling fan)

What are we working on here? There are some options if you look through the Dorman replacement parts lists that can give you two very large puller fans. For instance, a Chevy Traverse replacement fan set works well on a ‘81-‘93 dodge pickup.
Thanks, 70 Dart. I have two 13. In pushers fans mounted on the fins on the front of the radiator. With the shroud Im having built a, thermo fan, 2 electric fans,and a high vol pump , i should be good, but I want to be damn sure as we will be doing a lot of cross country driving and I dont want to be at the mercy of someone fixing my car that I dont know.