Radiator/Engine temp questions

Hello looking for some info/ suggestions. I have a ‘72 Duster with a 360 in it. the engine temp ranges from 200-210 degrees which seems high to me but I’ve been told that’s normal.

I have what I was told is a rebuilt stock radiator with no fan shroud. I know I need the fan shroud but I’m thinking of getting an aluminum radiator. Any insight to the type, size radiator I should purchase? Thanks!

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