Wana Buy BUT ,Whats the difference in dart convertibles 67-68-69??

$5000 and it needs all that work in this economy? Seems kinda high to me. I know a girl that bought a 68 rag top with a slant/auto and runs and drives great, new top good int and older thin paint but driver and presentable looking. Very solid car. She paid 7k for it two years ago.