I posted this up a few months back when I was selling everything (including my 73), but I still have the conversion kit. While it does make a great weight to hold down spare pieces of cardboard in my garage, I'm still looking to get rid of it. I think I listed it for $120 last time, but will sell it for $80 now. Feel free to shoot me an email at bobsurf at gmail dot com. I'll try to keep checking in here as well. THanks.