Hey i got a 99 F-150 4x4, i was wondering what are the pros and cons of adding a leveling kit and do the pros out weight the cons? ,the ones i'm looking at use the tbar keys. i also wanna run a 33" tire i was looking at something like this http://www.readylift.com/c-57-f150-h...d-only-25.aspx

 

so you want to go the route of the t-bar adjustment by relocating where the sit normally. thats fine but it does slightly stiffen the ride and makes you need an alignment but thats well worth the level. but it will fit 33's!

 

You can crank your torsion bars and level it. From reading on the forums the keys are worthless and do more harm than just cranking your T-Bars. Either way an aligment is required afterwards