If you are going to put longer springs up front there is welding involved. Beware of shackle lifts, they will change the angle of the pinion angle in the front and rear. Also in the front it will change the caster angle in the steering, which can cause all kinds of problems. If you are building a mall crawler you may be fine, suspension is a science and cheap lifts can suck. Do it right or do not do it at all.
