Please help me identify parts

[CG]

Been organizing my shop, building shelf's etc etc. Ive come across a bunch of stuff I forgot I even have. Here are a couple items Im not positive of the identity.

I think the pulleys are off my 67 with the 283, I don't remember them being this greasy though.

And I think the brackets are for small block air conditioning. Not positive, and not sure if its all there. I think I purchased them for the air in my panel. Heck I'm not even sure I need them since I have Old Air aftermarket air con waiting for it.

Thanks for any help, and sorry for the crappy pics. For some reason the auto focus on my Nikon D40 stopped working and I'm having to use the manual focus which Ive never used before. (if you have any ideas on why my auto focus isnt working a PM would be greatly appreciated)