I have dual 180's from Kennedy, but I also use the Lund winter front panels that snap into the grille of my Tahoe. For temps around 20 to 40 degrees F, I use 5 of the 6 panels to block most of the grille. For temps under 20 degrees F, I snap in all 6 which completely blocks all the grille. If I ever tow a trailer for more than a few miles, I just have to remember to pop out a panel or two to keep the engine from getting too warm. Otherwise, this works great for me here in the Midwest: cool thermostats for summer towing, and quick warm-up and cab heat for the winter!
Casey
1995 K1500 Tahoe 2 door, 6.5LTD, 4L80E, NP241, 3.42's, 285/75R16 BFG K02's; 1997 506 block; Kennedy OPS harness, gauges, Quick Heat plugs, and TD-Max chip; Dtech FSD on FSD Cooler; vacuum pump deleted, HX35 turbo, Turbo Master, 3.5" Kennedy exhaust, F code intake; dual t/stats, HO water pump, Champion radiator; Racor fuel filter