[schosh]

Rob,
The key to a trip like this is preperation and an adventureous attitude. Start with a well tuned car, (especially the valve gap!).Keep an eye on the oil and head temps . Join triple A (always a good thing...one tow and you've saved money.) Carry a good basic set of tools. There's always a little fiddiling and tighting required.
Avoid long runs on the expressways..you'll discover that the older US numbered highways are more interesting as well as allowing your engine to work at different rpm ranges .Besides you wil probably get to talk to folks who want to know more about your car. ( Ya mean the gas tanks under the hood ?)
Don't ignore the car , pop the hood every time you refuel and check the oil, and look at things like the coil wires fuel lines ect. early detection keeps small problems small.
Keep a loose schedule so you don't feel stressed if haven't reached point A in x amount of time. Follow your instincts , if a road looks curvy and or hilly,consider it even if it might not be the shortest route.
Remember , the trip can be as enjoyable as you want it to be, but if you are simply trying to get somewhere in the least amount of time , fly.
I've made 6 2000 mi+ trips, along with twenty 200-400 mile trips in my type 4 powered vehicles in the past 5 years. Biggest problems, a fuel pump failure , several flat tires ( usually from contact with big rocks or the curb) , and once a freak occurence when the points broke! I think the 914 really shines on long crosscountry jaunts, especially when you can go topless.
Good luck..
ps if you want some tips on cool roads in South Kentucky, East Tenn or west Carolina drop me a line.
Schosh