can't find main line and secondary line leading from the master cylinder to the antilock brake

Why do you want to replace them?

the tubes attached to the lines rubbed together and wore through

So you are looking to buy new lines ok, you can go to any brake repairer shop (the larger the better and give them the sample pipes, they can make them on the spot in most cases and they are often quite cheap as they can use you fittings if they are ok, check your phone book for the nearest brake repairer and see if they can make these for you.

thanks