1968 250 Question

I have just purchased a 1968 250and have a few questions. The transy is good, clutch strong and it runs good at about 60mph. At 70 it feels like you are pushing the car too much. Could this be lack of compression?

The CV boots rubber appear to be dry. No visible signs of cracking yet. Is there a best way to tell if the CV Joints are damaged, and if so what I am in for in terms of expense and time?

I just purchased this car for 1,500 (it has 132k) with thoughts of having a car to work on and learn a bit. I am now wondering if I got lass than I pad for. Any help is appreciated. The body looks great.