I ended up getting the piece that I needed from the plumbing department at Home Depot.
I bought a funnel and a 2" plastic fitting and after heating it up in the oven for a minute it fitted perfectly on the grinder.

I made it last night and the Polish sausage turned out very good. It's Polish sausage, pierogies, kraut and mashed potatoes for dinner tonight. Na Zdrowie and thanks for all the help/suggestions.