Hello, Harold!
The 1811 uses a different style of 3 point hitch than your 1650. The 1811 uses the category 0 type of 3 point, which is a bit more heavy-duty than the Cub Cadet style 3 point on your 1650. Unfortunately, this means that your attachments from your 1650 won't fit the 1811. You'll need a different style of 1-bottom plow, and I'm not sure about the blade. As for pictures, I have an 1811 but it doesn't have a 3-point on it. I do, however, have the service manual for this tractor which has installation instructions. If no one posts pictures in a couple days, I can scan a page or two from the manual to show you what this looks like.