Body lifts are basically for getting more lift, simply and cheaply. Fit those big tires you "thought you could fit" and stuff like that. On our Trackers/Kicks the frame is fully boxed with many crossmembers, making it very rigid and a solid mounting place for the body. Meanwhile our suspension lifts are relatively inexpensive (ever priced a fullsize 4x4 IFS lift?

) and not terribly difficult to install so people consider suspension lifts first. If I had assembled my Tracker I'd have likely not done the body lift due to not really wanting to have to get into all the complexities of it.
However on other vehicles, modern IFS trucks and such, where a suspension lift costs $1400+ just to buy and another $1000 to have a shop install as it is VERY complex the body lift looks better. For many the body lift is therefore a viable option as at less than $800 installed they get 3" of lift and can fit bigger tires. Also leaves you with a stock suspension and no more troubles than it will give you.
On the
www.TheRangerStation.com forums that I read for my Ranger we often recommend body lifts to guys that want to lift their 98+ 4x4 Rangers/Mazda B-series. There are four suspension lifts available for those things. One is junk and $1200+, one is okay and $1400+, one is $2300 with a coil over conversion, and the last is a full 4x4 desert racing conversion that will set you back upwards of $5000 and you have to take the truck to the shop in SoCal.
Suddenly that $200 body lift and $300-600 worth of shop labor if you can't do it yourself sounds pretty good. Either way you can fit 33's and with the body lift you can afford to buy some.
