I went with a maxtrac 3"/4" kit, came with shock extenders and 4" springs for the rear, 2" spindles and lowering keys up front. Did the free travel mod and installed everything and I was not super happy with the out come. Only gave me a 2" drop on the rear. The front was ok. I called them and they were not very helpful at all wanted pictures of the install and old parts blah blah blah. Said that my truck must have be modified before that's why I didn't get my desired drop...long story short instead of dealing with all that I ended up trimmimg my rear brand new spring down, cutting out front bumper stops also and cranking the keys a lil bit. After an alignment I will absolutely need camber adjustment kit it has -3.8* up front but honestly drives pretty decent for a slammed SUV. Feels like most of my other cars that have BC coilovers on them, pretty stiff but not as bad as a few of my bagged trucks have been. Overall not very happy with the Custer service and the quality of parts isn't horrible but it is what it is. It's lowered now.