New engine or new car

A good used engine might be best thing for your car unless you want to keep the car for a long time in which case do as Tom suggests.

I agree with Tom.. especially if the interior and exterior of the car is in excellent condition.... IF, the interior and seats were worn and needed replacing I would probably say goodbye.... BUT, sounds like you have maintained this car well.... And it's​ probably worth the money to get a replacement engine.... I would look for a remanufactured engine though.... I don't like used engines....you don't have any idea how they were maintained or driven..... could have been abused..