Your link doesn't show because that site is not allowed to be used on OCC. The owner of it is not a man of good character. We ask that you don't even bother visiting his site. Definitely don't buy from him.
Yes, the one piece clutch disk replaces the fiber one. It will be fine.
I suggest a Kevlar disk from MWSC:
https://mwsc.co/products/clutch-disc...nt=28926891595
If you plan to plow (moldboard) with it, you might consider a heavier spring. Not necessary, but nohttps://mwsc.co/collections/clutch-and-driveline-components/products/clutch-springst a bad upgrade:
https://mwsc.co/collections/clutch-a...clutch-springs
Yes, it has 6 holes in it. You will only use 3.
Our sponsor Patton acres has the thro-out bearing for a good price.
http://www.pattonacres.com/cub-cadet...37r1-941-3056/
You will most likely need a teaser spring. They always seem to be broken:
https://www.cubcadetpartsnmore.com/m...mpression.html
Get a package of spirol pins from McMaster Carr. Good thing to keep when owning Cub Cadets:
https://www.mcmaster.com/#95755a415/=1aehrop
You can buy however you like. I just showed who has the better pricing. I wouldn't want to pay shipping from all those places. I suggest Cub Cadet Parts and more for OEM parts. Ebay has a lot of sellers, just watch the prices. Rich Patton may be able to get you all the OEM stuff (bearing and teaser spring) if you can get him to answer you. Been a lot of guys saying he is bad about not answering the phone, or getting things shipped out. You can also check out MWSC, they have complete rebuilt clutch assemblies. Just take yours out, and install the new, then ship them your old core.