I've noticed quite a few truck posts here in Others, so I thought I'd point out that NICO has dedicated truck forums with lots of knowledgeable owners. Posting there will give your questions a much better chance of being answered.
The truck forums are located just below the Infiniti forums on the main forum index. Or you can use these links:
Nissan Trucks forum (Xterra, Titan, Frontier, Hardbody)