I finally got all the parts to convert my D120 pin-on bucket to an H120 quick attach bucket system. The reason for this was I want the Artillian fork setup and after speaking to Chris and finding out the pin-on system does not work with his forks.......well that did it! I HAVE to own his forks! Parts can be obtained through John Deere for around $340. First step was to remove the 4 bolts or "pins" that hold the D120 bucket on. Once this was done, the brackets that are welded to the bucket must come off. I used a 4 1/2" electric grinder to quickly remove all the factory welds and the brackets were off. I them bolted on the quick attach brackets to the loader frame. This was pretty straightforward with the long pin going through the lower holes of the brackets. The existing upper D120 pins are a perfect fit into the new H120 brackets. I then positioned the bucket up against the brackets to make sure the bucket will be oriented properly to the loader brackets. I made sure that up/down height was also correct. I didn't want the bucket to have a higher or lower full raise height that stock. I then painted all cleaned metal surfaces with weld-through primer. This stuff is necessary whenever welding must be done to bare metal where parts of the welds can never be painted due to access. The paint is a silver color in the photo. After tack welding the upper hook brackets in place, I removed the bucket and did a complete weld job to both brackets. After the upper brackets were welded it was time to move on the lower lower quick attach pins. I reinstalled the bucket on the loader frame and raised the whole thing up enough so I could mark where the pins would go. I had to cut about 1/4" off the new pins because they stuck out too much and I did not want the bucket to flop around with the lynch pins installed. Once pin position was marked I fully welded them to the bucket. Note here that although you can't see it I ground the pin surface to be welded at a deep 45 degree angle so the finish weld was flush with the pins. This is necessary because if any weld protrudes outside of the pin diameter the bucket will not sit flat against the brackets. After everything was welded and proper fit was correct I painted everthing and reinstalled the bucket. And there you have it, a quick attach bucket for the D120 loader.