Lotsa work
I have a 40.5, and just installed a full Link 2000R system with Balmar. You will have to rewire your batteries completely with mimium 1/0 cable, plus there's a whole bunch of other wiring from the Link panel etc. You will need the proper cable, ends, crimp tool, (do not solder), and some fairly good wiring skills. I also suggest you put in a Heart Pathmaker while you're redoing the batteries.For more info, you can email me direct aboas@cabletest.com