I use the freeze plug method, it's alot cheaper and works for me well. I use the Dan-Marc without the filter and put a filter in line with it. Still waiting for delivery for mine.
http://www.dan-marcrvparts.com/12vomufushof.html The filter I use is a Wix no. 33049 and replace the T in the fuel line with a brass one and replace all clamps with the screw type.
Got the carbs back in the bike today and have to do a few more things before starting her. I also had to replace one of the throttle cables and a slow jet that was broken by someone.