I just picked up a plow blade for free and want to put it on my kodiak 400. It has nothing with it, just the blade. How can I build a frame to connect it? keep in mind, it has to be manual lift?

 

Find a bike that has one and copy it i would say.
The chinese seem to be pretty good at it LOL
You could also by a chinese low priced winch.
I have plowed with a cheap 1500 lb winch for two Winters now.
Still works fine. just put extra grease in the gear head,
they dont come with much.