I have a 2010 XLT screw 5.5 bed and 5.4. I love my truck and 5.4. I have no intentions on trading up.
My only issue has been the usual drivetrain shudder, wheel hop, and random low speed vibrations. Example, when I drive slow through a drive through window line or the car line at my son's school I get a shudder that feels as if runs through the entire drivetrain.
From what I read in other brand truck forums, it seems that this is also common with Titans, Tundras, S10's, and numerous other rear leaf springed vehicles especially trucks. The rear suspensions on pick up trucks are expected to ride smooth, perform, and carry heavy loads. A tall order, so some side effects are expected when we try to make our rear suspensions wear many hats.
Based on my research, there are numerous home grown fixes along with pricy after market ones, such as 4 caltracs and full on Pro Comp kits.
I wanted to try these solutions starting from the cheapest and simplest and then work my way up. I will stop when the solution works or I cant afford the next step.
I will follow up soon with my first which will be the simplest and cheapest. Leaf spring clamps.
2010 F150 XLT 4X2 Screw 5.4 3V 5.5 bed
AEM CAI and TBS
True dual exhaust with X-pipe and DI/DO Magnaflow