I would do this if it was me in you're shoes. Since you paid $100 I think you're best bet would be to part it out. Then if you still wanted a z by the time you get some cash saved up buy a clean n/a or tt whatever floats your boat. If you were being serious about the doors lineing up after that kind of accident then it will be untelling what part of the car that you can't see took the brunt of the force. You will end up spending enough just getting it road worthy again than you would have on a clean z to start with and maybe have a little left over for mods... Again thats just what I would do which may not be for everyone. But I think the car all in all is just bad news man...