MRL 360 Coolant Temp 210+

My mine is faulty, I think that the clearance are 3/4" from the radiator to fan, and 3/4 to 1" around the fan shroud.

As for aluminum radiator there are many, Be Cool, Phoenix, Griffin, Champion. I have used Griffin and Phoenix with good luck. They all make a stock style radiator. I like a 4 row, myself, but each has their own favorite.