i got a 96 chevy that has shackles and hangers right now and well im orderin a flip kit with c-notch and its comin with helper bags because this is a used kit from a guy i know well when i do the flip kit do i need the stocker shackles or can i keep the drop one but move the leaf springs down a hole on them? im use to the 73-87 trucks because well thats the only ones i lowered