Those are getting harder to come by - very sought after by the demo derby crowd. 1975 was be the height of the smog era, but that can be remedied.
If you've got time, I'd track down the Fisher body manual - there's a section on the care and feeding of the clamshell tailgate that will let you know what you're in for if something goes wrong. Right rear quarter looks to have been repainted; would we classify this as pea green, or puke green?
