The lift springs give you more height. The Sport model have a stiffer spring than the LTD or Base which you have. Since you are going to just change the front spring it may be better to keep things stock by buying a Toyota Sport spring since the rear would match in stiffness with the front replacement. If you check the Toyota dealer springs online there are many variations so best to find one for your model. (over 12 types and some made for cars in the USA or Japan, 3rd row seating etc.)
Another question is why are you replacing the springs ?