Help me pick my next project car

So again I'm thinking about selling my 914. It's a fun car but I hardly drive it and I'm not sure if I want to keep putting money into it. I'm still on the fence but I'm leaning more towards selling it. So I'm starting to consider alternative projects. I've been thinking about getting something American. I've never owner an American car so it might be a nice change of pace. I'm considering a gen 2 camaro and a Pontiac Sunbird. I'm still an import fan so I'm still considering some imports like a 1st gen Toyota Celica, 240sx, or NA Miata. Anyone else have any suggestions? Budget is about $6000.