Help getting my 42" Deck working on 105

[MiniXP]

I recently purchased a mower deck for my 105. I have some work I need to do before it will function, just need to figure out what parts I need. Thought I would have another month or so, but spring seems to have come early here in NC, so going to need to start mowing sooner than I thought.

Here are the thing I know I need to do:

• Rebuild PTO (I have previously rebuilt, but did something wrong which ended in the clutch flying off and breaking all the "teeth" parts on the friction disc)
• Get belt for mower
• Replace Pulley on deck (Idler pulley)?
• Need 1 shorter deck hanger (I think that's what it's called. On I have is too long and lets the deck hang down too far, the other side is the correct size).
• Sharpen or replace blades (lowest priority)

Can anyone help me out on how to find the correct parts for this stuff? I've been looking around on http://www.ccspecialties.org some but have had a hard time determining what the correct parts are.

Here are some relevant pictures. I need help figuring out what pulley I need.
Deck:


Pulley I need to replace:


Deck Serial Number (I haven't been able to make out what the actual serial number is):


Here's a picture of the tractor as well: