Hi guys new to this forum got a gxp and a regal gs question the gxp rear struts seam to be weak i put impala quick struts from Monroe police /taxi on the regal it has a very firm ride now also has gm strut tower brace and sway bar kit gxp only has k&n intake &20 in rims regal has 3.4 pulley cold air intake bigger brakes exhaust mods