Well, after reading everything I could find on the Smarty Jr. I pulled the trigger and ordered. Planning on loading it into my 04. 5. Thanks to everyone for their information posted. Wasn't looking for wild power, since I drive long distances in the summer. Truck has about 52,000 on it and is also mostly stock except for brute intake and mbrp muffler. Pretty new to performance upgrades. Any other suggestions, recommendations besides stop smiling:-laf. Thanks!