[Hcb3200]

I run AC, Power brakes and steering, and automatic(6l90) cooler in radiator here in georgia where humidity rules during the summer.

I think you should run with what you got and determine if you need more.

A electric fan does wonders even with stock radiator when sitting in traffic. Fan means nothing when driving as forced air does its job.

But if you do need to upgrade then you definitely want to make sure your own measurements matches to what your vendors says it it. Don't just trust yea they are all the same it will fit.