Need radiator, clutch and fan but have questions.

[Jayschevy]

I have a 71 350 C10. Currently there's a small leak in the radiator so I'll like to change it out. While doing that I'll also like to add a clutch and fan blade. The PO put a flex fan on the truck that I don't like. My questions are:

- I see on line 2, 3 and 4 row radiators, will they all fit my truck? What's the advantage of one from the other? Aren't the 4 row's bigger?

- Which fan blade would y'all recommend?

- Which clutch would y'all recommend? With a 4 row radiator will there be any clearance issues with a 4 row rad?

Thanks