The job is not that hard except:

1. You'd need to crawl underneath the car (use sturdy jacks for safety)
2. Remove engine undercover
3. Remove old banjo fitting underneath the rack
4. Expect still more steering fluid comes out of hoses and rack - even though you've tried your darn best to empty it all at the reservoir and pump
5. (And this is the hardest part!) Fitting the banjo part of the NEW hose onto the rack.
6. Fit the other end of the new pressure hose onto the pump
7. Refit engine undercover
8. Refill with new steering fluid

If you're using aftermaket part then it would take longer, maybe 2 - 3 hours. This because the pipe bends done poorly by the manufacturer. You'd have to crawl out, rebend the piping yourself and crawl back under trying to fit again. And again. All the while fluid still dripping out to mess with your tools and hands. Very slippery. Lots of wonderful words too.

If you're using OE part, fitment is easy, about 1 - 2 hours overall the job is done.

You might find the old high pressure hose has a long curlicue bend (long 'U-shaped' hose that goes underneath the engine oil pan before coming back to rack) to absorb high pressure whereas the new hose doesn't. This classic part is rarely available online now thus owners have to make do with the shorter high pressure hose version. However the classic part is available at brick/mortar Volvo parts store if you have one in your town.

You might experience some occasional steering vibrations when turning during parking, using the new shorter hose version. This doesn't happen with the classic part.

Amarin.