Radiator Choices?

[JJanzen]

I recently installed a 4 core radiator that I purchased from Auto Zone for about $ 190 bucks. After messing with it for hours, I determined that the way it was made wouldn't allow it to drop into the lower radiator mounting pads/brackets or the top ones wouldn't fit over the top of the radiator. This left the top brackets sitting about 3/4" high. I am assuming this is a "universal" type product and not specific for our trucks (mine is a 72). In looking around at different suppliers, I found a variety of costs from about $ 190- $390.00. I would obviously like spending as little as possible but want one that is a direct replacement and will fit without having to mess with it much. Does anyone have any suggestions or experiences that they could share to steer me in the right direction? Your help is greatly appreciated! Thanks.

Joel