When I restored my truck I don't even think I had to replace the steel lines. I cleaned them up and just replaced the rubber hoses. I also replaced the diaphragm on the rear. I was lucky at the time to find one sitting on a shelf, NOS. Anyway, although the truck doesn't see lot and lots of miles every year, I have had no issues with my two speed rear since I got it on the road in 2003.
Last edited by Bill Marlow; 01/04/2019 10:10 PM.