this is the website i used to string align my car with. http://raystrax.com/ha/914/Align914_Forward.html he also gives suggested specs.

I've string aligned my car a number of times before with limited success, but I really never executed a level of precision that I should have. I used the above method this time to redo my alignment again due to a nasty vibration that I was starting to get around 73 mph.

The only thing I did that isn't in the instructions involved building a set of 3" platforms to sit level under each tire allowing me to reach up under and adjust the tie rods without needing to lift the car. This made a huge difference and probably allowed me to get it right this time.

I took it for a short drive around the block and everything felt good. Then yesterday I drove it to a client meeting, and I was running late. I got on the highway and hammered it - decided not to look down until I started to feel a bit of vibration - 110 mph. I think it worked this time.

D