When mine broke, I took all of the lines off and started to replace, but I ran out of time on the weeked, so I took it to a local shop. They charged me about $450 to intall the lines. I provided stainless steel line, braided stainless flex lines, and all of the line nuts. To get the lines out of the ABS unit, I had to cut all of them, un-bolt the unit from the frame, put it in a vice and use a pipe wrench on the line nuts.
I bought my stainless steel line in bulk rolls from Summit Racing. It is only about $10 a roll more than the poly coated steel line and is just about as easy to work with. My mechanic called the stainless steel lines overkill, but I didn't want to worry about them. They have been on for over two years and still look brand new.