When lifting a TTB Explorer, going with the 4" is a tough call, because of the spring under the rear axle, most lift kits supply or require or for new springs (more arch), which adds to the cost (Trailmaster, Superlift, Skyjacker). A cheaper add a leaf may provide the required lift, but the ride will be harsh!
The 5.5 Superlift 4WD kit re-uses the stock rear springs, but places them over the rear axle. Infact, the 5.5" costs the same as the 4" (or less) due to this fact, so that was why I went with it over the 4" (and I have the factort HD leafs but still ride soft). And gives enough clearance for 33's. I dunno what Skyjacker does for lifts over 4".
Some >= 4" systems are complete, others have options that you order as extras to the "base kit", which usually includes dropped pivot and radius arm brackets, and front springs, and bolts. Rear springs, perches and shocks can be options. Also, any lift over 2.5" requires steering correction (dropped pitman arm), and 4" will also need longer brake lines. Replacing the worn out rubber bushings with polyurethane ones is worth it too. As well, you can get longer radius arms and better steering components as options, too.
Factor in $ for miscellaneous parts (bolts, etc.), installation and alignment (and the special cams).
For a 2wd onroad only? I'd think the a 5.5 to 6" system including shocks and rear spring perches, with the optional steering arm, brake lines, and bushings. Best lift to cost ratio, fits 33's. Superlift or Skyjacker.
Offroad, like pre-running? Try Fabtech's stuff.
Malcolm
