A lot depends on the design of the shocks, their valving, and their collapsed and extended lengths. A big issue for some shocks and manufacturers is that these is a significant weight difference between the 2015-2020 and 2004-2014 F150 beds, due to the switch from steel to aluminum. On shocks like these with their internal bump zones, it doesn't really surprise me that there's a tighter tolerance with stock bed weights. Unfortunately, I doubt a version of these shocks for 2004-2014 models is coming any time soon. For other possible options, give us a call directly at 623-434-5277 or email us at [email protected].