I just replaced all the small vacuum hoses on a 3vze including the 2 going to the front diff. It took just over 28 feet of small vacuum hose. So if you were wondering how much to buy, 30 feet will get the job done with a little to spare. I did not do the power steering as they are bigger and didn't have the hose.

 

The OEM hoses are numbered (somewhat cryptically, but enough to really help putting it back together). You might think of getting a "paint pen" from an art store (my favorite color for this work is yellow) and drawing your own numbers.