What Rob said!! Make sure it's in good solid condition, drive it, then figure out where you want to go with it! The only "it would be a really good idea to..." things on a 914 are:
- Replace your fuel hoses. They get brittle over time, or weak, and can leak. A high-pressure fuel leak directly over a hot engine is not something you really want happening. In general, you should think about replacing them every couple of years or so, especially if you're in an area that mandates ethanol in the fuel.
- Inspect the fuel lines that come out of the center tunnel. If they are brittle, consider replacing them with stainless hard lines. Racer Chris here makes a set, and others do as well.
Apart from that, check out the rust and inspect where the suspension attaches to the car. Make sure things are generally in good condition and not falling apart. Make sure the brakes are working. Replace all the fluids to reset the counter on that. Do a valve adjustment, replace the ignition tuneup bits, and so on. Basically the stuff you'd do with any used old car.
--DD