Surplus Center has the PTO kit for $100 now. It's a great deal.
You will have to get the Draft from a damaged 1260 or from your dealer. The last I heard, it ran about $500. All the 1260s had Draft standard.
Tim,
Sorry. I checked again and they don't have them for a 1250. I have a new mid PTO gear box for a 1250, but you would have to get the linkage from a dealer if you want you can PM me.