Electric fans and shroud recommendations

Getting ready to buy some more parts for my 70 dart stroker big block drag car, maybe later some street
I am going to buy a 26 in 2 core 1.25 tube cold case radiator.
I'm looking for a fan or fans and shroud efficient enough to cool what maybe close to mid 600 horsepower.
Let me know what you run, how you like it & anything you might think is better
Thank you all.
I have a 14'' and a 12'' elec fan, almost no time on either -----------for sale if u need ---