How great it would be to have a list of repo parts by members here so u can type in part and wamy u can get one without looking all over the place for them. frender bolts/clips z-bar bushing X-bars tail light rubbers bell fork linkage and on and on... If i repod a good part i would have it on here to savre hours of looking and not fixing then driving.
search button for say Zbar bushings and you find several threads pointing to me. I use the search button all the time to find stuff
I brought this up before and heard nothing but crickets. As mentioned, your best bet at this time is to use the search function do some reading. You could also call the guys who restore the type of car your working on and ask what they use. Most in the Buick community are willing to help.