Flexible brake lines from Master Cylinder??

[Aurora40]

So I was trying to order the vacuum brake booster hose, the rubber hose from the brake booster to the intake manifold. As it turns out, both myself and the Chevy dealer I was ordering from jumped to the wrong part #. I ordered up part #10222294, which it turns out is one of the flexible brake hoses that run off the brake master cylinder and down to who-knows-where under the car. Even though it's a special order part, and I had the wrong number as well, P&G Chevy said I could go ahead and return it, which I thought was pretty nice of them. But on to my question. Are these parts hard to come by? And do they have a tendency to fail, or a need to be replaced as a maintenance item? What I am wondering is, should I go ahead and keep it, or send it back? Also, if I keep it, what's the part # for the second hose, or are they both the same and I just need a second one? FYI, for anyone interested, the actual vacuum hose is now just a bulk hose/cut-to-fit job. Part #9438124, a 25' roll of 11/32" hose. My original hose seems to be a molded piece of rubber though.

[phrogs]

I want to say they are the same part number for both of them the braded lines are the same.

I needed some a few months ago and got them no problem from wvzr1
but they are not something that I have seen fail but it probably wouldtn hurt to keep them as it is a ZR1 specific part