I'll have to go out and look at mine, but I didn't buy any extra parts when I converted mine, just modified the parts that were on it. I'll see if I can get some pics of it installed.
I've done this quite a few times and have always just used the parts that were already there, just had to make the shaft shorter and re-tap it if I remember right, and maybe shorten up some of the spacers...? It's been almost a year since I last did it, so it's all a little fuzzy.