I finaly had time to take a carb off the old 8hp and compare it. They are completely different from each other except for the bowl and float, I will use those parts on the 11hp carb. Water had been in the bowl for a long time, it was full of rust and water had frozen at one point and crushed the float. I should be able to clean it up but it is one of the nastiest carburators I have ever seen.