And your front is limited by the stock core support/inner fender well area. Most people for want to cut the entire front structure for more up travel. So stock with or plus 2 up travel is limited in the same place. So all the "extra travel" is at full droop unless you raise the ride height for a little more up and most customers don't want there trucks taller. I'd like to talk about the way bypass shocks work, they are stages so they are softer at full droop all the way down then they are at bump, bottomed out. They progressively get more stiff as they bottom out. We have tuned a lot of vehicles and what I'm getting out is if one truck has a plus 2 inch kit, and one has a stock kit. And they both have the same amount of up travel from ride height even the most experienced driver won't notice an additional 2 inches of down travel as the shocks are very soft at full extension.