As you know, that is a very, very, very old car. Most repairs will be easy, if you can find the parts. If you are NOT a tinkerer, you may want to step back, most mechanics don't like working on cars that are 20+ years old.
Other than that, that car has a million mile motor in it and can last a long time (as you seen). You can browse Volvo Parts, Accessories and Performance Specialist Since 1963
to see what kind of things they still offer for the car.