Idle pulley for my Stillen SC install
 

I'm hoping some one here can help me find the part number I need. I have the Stillen Super Charger on my 2009Z, it has the A2A upgrade from TopgunZ.
I have called and E mailed stillen to no avail, so I am seeing if my brother Z owners can help me out.
I need to replace the pulley that attaches to the idler mount from stillen it's just below the water inlet. Whole pulley is shot other wise I would just replace the bearing in it.
Anyone know if this a nissan or a stillen pulley and part #?
Thanks in advance!

Measuring mine, It is 1 1/8" wide by 2.5" in diameter. I hope this helps!!

I have my wore out one also. I finally got stillen to answer the phone. They said I'll look in to it after you Email me! So I Email them and wait 4 hours, no response even though I attach their install PDF tell them the page # and photo # with the pulley I need. So I call back get told the engineer will be back in 15 minutes. Sheez what run around. They finally call back and I almost faint, from the actually clinic g back and the price. $115.
I need the pulley and don't have the time to research and hope I can find a correct replacement. So I pay the highway robbery and order it.