ok, I have a drawn a picture of what is supposed to be the pulleys. Can someone please tell me if the pic is correct? and feel free to add anything to it.

i still dont understand how you tighten your belts. can someone show us all exactly how its done?
btw, on the tensioners there are 14mm nuts

G35s6mt/TSecu/350Z Springs&Struts/K&Nfilter+Z-tube/StillenDualExhaust /6WireGroundKit/KinetixHighFlow

 

Neff, Here's the pic of the 2 drive belt setups from my Coupe owner's manual.. probably similar in your Sedan book.
The 2 unidentified pulleys are the adjusters that have locking bolts on the bottom (pointing to the ground).
C.

<font color=red>GSM</font color=red>
<font color=red>GSM</font color=red>
<font color=black>Silverstone Coupe</font color=black>

373298-belts 001.jpg