Alright so when I do my SAS I plan to lift my rear equivilent the right way with Chevy Springs so I can flex good. The problem is that when my flatbed is done in the next couple weeks I will have about 1" behind my rear shackle mount. Everything I have read says double shackle or move the mount back 4". Double shackle IMO is half assed especially for a daily driver. Obviously I have no place to move it back with lack of frame. So what do I do to keep my wheelbase the same?