Try this site for information on classic autos www.classicautolistings.com I listed my car and got dozens of call the first week, not bad for a new site.
My latest round of problems with 98 Malibu (86k miles) started about a month ago when alternator died. The indicator on the dash said battery was not being recharged. Local repair shop said alternator was dead. I barely got the car home after 5 minute drive and it started acting up ...