On the return line (the one that goes to the reservoir at the back), yes you can splice in hose.
I got some at the local FLAPS, no problem.
Frank Condelli has a great page of information and offers replacement lines also
http://members.aol.com/Fkc43/hose.htm

-Hans

----- Original Message -----
From: "John Wallace" <jwallace@MSAD43.ORG>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, October 27, 2004 10:48 PM
Subject: LEAKING POWER STEERING LINE

It appears that the metal power steering lines have rusted through at the
front of 88 vanagon. .

Can I splice in some type of rubber hose to replace the leaking part?

If not, where might I obtain replacement line?

John