Not really much to worry about with exhaust and springs, these are normally the first things that get removed when it comes to mods, just depends if you want to keep it standard but still not a big job or expensive to put new standard exhaust and springs on.
Have a good look under the car for rust, old cars now plenty of rot boxes knocking about. Take your time go and look at more than one, good service history is a bonus, try and find a jem with low mileage, you be surprised they are about.