Don't know if it affects your car but call your Nissan dealer with the Vin number of your car there was a recall on the lower control arm, recall # 02V146000
There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online
I'm sorry, my service info. gives me no info on the torque specs. However, it does say to tighten them with the vehicle weight on the suspension. When we are in this situation, we look up the specs based on the bolt size and thread pitch.