Tomorrow im gunna do this after work....is it only the one bolt and its off type thing or do i have to watch out for anything specific when doing this?

One belt. You putting on the ZZP and a smaller pulley?

no, im going with the stock sized one from the dealer for 130 CAN $
Im replacing it because it rattles around due to weak springs and what not.

The whole tensioner, I hope for that price. Not just the idler?

I hope you know which way to turn the bolt and the 12 point socket wrench deal because I have the same problem? Which way do I turn the bolt on the block?

Which bolt are you trying to turn?

The SC tensioner pulley itself is a reverse threaded bolt. All other idlers etc are regular thread.

Does reverse thread mean turn clockwise to loosen bolt? This particular belt tensioner is located near supercharger and makes wracket and I'm trying to get this ride saftied. How much pressure will I place on torque wrench to tighten new pulley to the belt tensioner?

Let'* back up for a moment. What year car do you have?