A sleeve hitch is a one point hitch that requiers one pin to attach a implement like a rear blade or a turning plow. a 3point hitch has two lower arms and one center link to to raise and lower attachments like a plow or Blade and has 3 point's of contact one on the left side and one on the right side and on on the top center. Here are two links to help you out on your 300. The first if you want to add hydraulic outlest and levers http://aux-hyd.com/ and the other will help with restoration and info on your 300 http://weekendfreedommachines.org/ :thThumbsU