the leaf springs go underneath the axle. so ,hhmmm weld two new perches to the top of the axle and mount the leaf springs on top of it....... air shocks......air shocks and shackles.have your rear springs re-arched. and i have no idea what you mean by this "I take the rear mount of the leaf springs And mount it parallel to the ground versus perpendicular I can get a bit of lift."