Re: Macro line??
If you marker is stock and there is nothing wrong with your steel braided hose, I'd just leave it personally.
If you really want to all you would have to do to install it is take the stock fitting off, wrap the threads of the adapter with teflon and screw it in. Remember if you decide to do this you will also need 2 Macroline fittings and Macroline. Check with Hobbyhorse on this site, he might have everything you need and he has some cool new black macro fittings.