Non of that is required for a small lift!Beware the kits that seem really cheap as they may not have all the bits you need. For example, to keep the steering manageable you may want to consider castor correction front radius arms as well which can shove the price up. Then there's cranked rear arms, and possibly wide angle propshafts to consider too, so once you put the height up other bits may need changing to maintain driveability. Lifting's not just about longer springs, it's a whole way of life.