I want to add a budget boost to my 4 door sahara (2010). Will I have to extend brake lines, use wheel spacers, relocate traction bar if I keep the stock wheels and tires?

 

most good kits will come complete with brake line extension brackets for the rear. the front brake lines are long enough and will not need to be addressed at this height. if you keep your factor wheels and plan on running 12.50 wide tires, yes, 1.5" wheel spacers are something that you will want. while you should be fine with the factory track bars, an adjustable unit would be nice to have up front as it will allow you to recenter your axle. DO NOT use a relocation bracket up front as it is not needed and will cause problems if you do not install a dropped pitman arm or drag link flip at the same time and, would still be problematic as the amount of lift you'll have may be too little. a rear track bar relocation bracket is fine and is included in a lot of kits.