I planning on takeing at least 12" out of the box, and ptuuting the chevy springs in. The box is already off. With the chevy's in, will the shackle interfere with anything or stick out past the back of the box? It looks like it right now. I'll be running a dual shackle using the stock toy shackle and the stock chevy shakle. I plan on mounting my bumper up on the frame once the box is bobbed and this might cause problems with the shackle.