You need to research where to sell your car. Other places are selling Firebird's a lot high in price. Canada, Australia and Europe will pay much more than most areas of the states.
I would not sell an incomplete or low end Firebird at any auction. There just is not enough local demand to get enough people to bid it up in price.
Use a specialized seller, eBay to sell it. That car would have sold here in Alberta for 60% more or better.
Engine Test Stand Playlist: https://www.youtube.com/playlist?list=PLwoxyUwptUcdqEb-o2ArqyiUaHW0G_C88 restoring my 1968 Firebird 400 HO convertible (Firedawg) 1965 Pontiac Catalina Safari Wagon 389 TriPower (Catwagon) 1999 JD AWS LX Lawn tractor 17hp (my daily driver) 2006 Sequoia 2017 Murano (wife's car) 202? Electric car 203? 68 Firebird /w electric engine 2007 Bayliner 175 runabout /w 3.0L Mercuiser__________________________________________________________