I replaced a couple of these lines last night with spare rubber line I had in the garage. Looks like I am going to have to replace all these lines. The ones I pulled were so dry-rotted internally, they basically fell apart as I removed them.
Oh well, 25 years and almost 560K miles.... it was probably time to change them...
Being that I need that much (and not wanting to steal all of Bill Lewallen's supply), I will just stop my mechanic's shop on my way home from work this evening. He said he had it for around $2 per foot. I guess I will only need about 3-5 feet for the entire job.