Well,I bit the bullet and ordered a Smarty for my '07. Bob got it to me in short order and all I can say is WOW! Really woke the truck up and enhanced driveability enormously as advertised. Corrected the tire size so I'll check accuracy with my GPS. I had been hurtin' for poop after selling the '99. It's nice to have the passing power back. With my load and stock clutch,I'm going to leave it on #3 for now. Thanks to Marco & Bob Wagner.