Welcome from Minnesota and a 71 GTX owner. Nice car to start with.
Thanks for the heads up ZR9B.I had a 71 and a 72....I'm always keeping an eye out for one....yours looks like a good start. Its always been a good idea when using a floor jack in the front to lift from the k frame and when you use jack stands dont let all the pressure off the jack. If you even think you have frame issues this will save you from making it worse.