Dairyman, To answer your questions I am located about 45 miles northwest of Milwaukee, WI. If you live in the area, you are welcome to take a look. The brackets appear to be after-market. Im quite sure they were not a Gleaner part. If they were built in a farm shop, they were well built. No, Im not interested in selling these; however I am providing you with the dimensions. I would not have any problem making my own this is not rocket science. The material is 1_4 inch X 2 inch X 24 inches of steel for each. There is a bend at the 4 1_2 inch point. The bend is 25 degrees from being straight. There are 2 holes 5_16 inch holes drilled in the 4 1_2 inch section. They are one inch up and one inch from the end, and spaced at 2 1_2 inches apart. At 4 1_4 inches from the other end, a 6 inch piece of 2 inch steel is welded at a 70 degree angle. It is designed so that, when the 5_16 inch bolts (and bent section) are attached to the sidewalls, the 6 inch piece bumps against the sidewall to keep it stable. The brackets are attached to both sidewalls so the bottom of the bracket is about one inch above the raddle chain. I dont know about the M2, but all I can do is tell you about the location on the l2. I would think they are the same. Anyway, on the left side of the separator sidewall there is a big rectangular hole with a cover (there is a smaller hole on the opposite side). The bracket is fastened so that the first 5_16 inch hole is 2 1_4 inches to the right (back) of the lower, right hand corner of the large hole. The other side is located directly opposite. I hope this helps. This combine came out of East Central Iowa, and it is possible that Dave Moeller installed and_or built them since he was directly involved with the machine from 1995-2005. He might be able to provide additional information. Ken.....