[rsavage]

I've had 2 core or 4 core original style radiators in the old trucks I've had, never a 3. But I'm no expert. I bought a 4 core original brass and copper radiator like the stock one when I replaced the heavy duty radiator in my shortbed with AC. I paid a little over $200 shipped. If you already have the thicker radiator, you won't need to buy different hold downs. They do make replacement aluminum radiators that are often 3 core or 2 wide cores. I personally don't like the way they look or fit, but that's just me.