So I've been looking for struts for the GXP for a while now and I've been having no luck. I've seen in other forums that some people will use the blisteins from the GXP on their impalas. I found that the kyb SR4089 fits 18' wheels on the impala. So would they fit on the Grand Prix as well? Seeing that the Blisteins fit on the impalas, their struts should fit our cars too right ? Or am I way off? Thanks in advance