Originally Posted by Pure Perf
At the 4 to 4.5" lift height you will actually get better travel and better performance out of a coil spring and shock combo. Removing the OEM spring/shock mount from the frame and going up under the hood with a hoop to mount a set of coil overs would be the only way to get more travel. Unfortunely coil overs are limited in packaging by their construction. It sucks because we make coil overs too. Very disappointing.
True the travel is decreased but that's a deceiving answer to someone who doesn't understand suspension. No one is getting 15" of travel out of these trucks, a .5-1" is negligable and, when properly tuned, nearly un-noticable... If what george is suggesting is a coilover/bypass setup, you're correct in that the travel will be shorter than an independant coil/shock setup but the way the travel is handled with tunable zones via the bypass tubes, the coilover/bypass will outperform nearly any other setup.
If just looking at the coilover (no front bypass), I would recommend the pintop based on the additional travel allowed by the independant setup. In most cases, the binding of the stock arm will not happen when running a stock sway bar given the lack of articulation allowed by one side at a time. Sage tested the 4-link and the radius arms; although the 4-Link (when properly setup) is a great setup, the stock radius arm is also awesome when dropped and supports just as much travel.