When I did my xj it was a little over 7 inches of lift with 33's. It was my DD for about 4 years. Got about 15 mpg highway. But I would say not to buy it. If you want a xj over 4.5- 5 inches build it yourself that way you know what you have in it. If there are blocks in the rear walk away from it they are nothing but problems. Seen too many people break their springs and have drive issues with blocks