Look for seller "enginepowered" on Ebay, he has a kit with your choice of 60 or 70 tooth sprockets and come with everything including a lever and cable. You have to open up the drum center slightly to clear the bearing register but the drum bolts to all six holes. They are only like $39 or so, I have several for my Manco wheels and will be running one by the weekend on my Trailblazer with 6" Manco wheels.