[karlconnell]

Skip, my guess is that all models come with the beefier raditor with the integrated tranny cooler even though several sites that reviewed the Titan did say the tow package came with a heavy duty radiator. Don't forget, we also got the extendable tow mirrors (which I could not imagine going without now), lower final drive ratio, VDC, class IV hitch w/7 pin adapter, brake controller prewiring plus the heavy duty battery as you mentioned.

However, let us know what you find on the models without the tow package for tranny cooling.

Karl