Another Friction Disk Question CA78

[catterar]

I have been reading posts about friction disks and I think I'm about to go out of my mind.
Will these disks work in engine number CA77E1020976?
http://www.ebay.com/sch/i.html?_trksid= ... &_from=R40

If not what should I use and where can I get them?
Any advice greatly appreciated.

Bob