If it's just the hardware, you may find it here:
http://search.mobilehomepartsstore.c...indow-hardware
There are about 400 entries there for Kinro window parts.
If you don't see it there, do a Google search for KINRO WINDOW HARDWARE and type in any numbers you can find on the damaged parts, I'd think finding replacement cranks and pushrods is much easier and cheaper than buying a new 6' window......
If you can't find what you need, Kinro is owned by Lippert, the customer service department for Kinro has this phone number on their webpage:
LCI/Kinro customer service at 574-312-6061