Yep.. I've seen setups like that many times that work good and guys with aftermarket stuff that looks trick doesn't work as good. I tried water wetter and it did help. I do have a 33% mix of antifreeze. Going from a 50/50 antifreeze/water mix to the 33% mix with water wetter dropped it a good 10 degrees.
BTW: how hot was your summer up there this year? It was well over 100 for nearly 4 weeks straight here. Hottest summer on record. I didn't even get the cuda out then it was so freakin hot. I'd hate to imagine how hot it would have ran in that temp.