I have a 2008 Silverado 1500 2wd. Bought the eibach stage 1 kit to level it and replace front and rear shocks/struts. It utilizes some parts from the OEM struts but previous owner already had aftermarket struts. I need the lower spring perch from the oem strut to install the eibach kit but the only strut assembly Chevy has, the lower spring perch is welded to the strut. Any advice on how to get around this?