For those lacking the 3pt hitch on their G series GT, here is one option

[artfull dodger]

Sleeve hitch system that will fit the G and other smaller tractors. As long as you have the frame and transmission strength for doing the work, most times its limited in duration so many smaller tractors can tolerate it. Not everybody has the space for or the need for a B series. But would like to use a box blade, small moldboard plow, rock rake ect. These implements were made in much greater volumes for a sleeve hitch vs the Cat 0 three point. So much easier to find(many are still made brand new) and cheaper to buy for those on a budget. http://www.johnnyproducts.com/J_Bucket_HTMs/UNI_Sleeve_Hitch.htm