Making it a better driver

Everybody has shared some great ideas.We need more information. What I read is you may be a little green about this car. You need to E-val-u-ate what you have starting at the front bumper and work your way to the back. The car is 42 years old.Anything could and can be wrong with it.As far as driving above 60, well, let's guess(and that is all we are doing is guessing) the car has been sitting quite a while.How old are the tires? brakes? Either drum or disc can be dragging or leaking.How about the U-joints? dried out? Exhaust from the manifold to the tail pipe needs checked out. Cat still there? might be clogged.I've had mufflers that looked good on the outside but clogged up inside.This is just a start.I'm not picking on you, if anything we all want to help you.Take your time. You are one lucky guy, 74 Dart Sport FOR FREE !!!!