Thanks all for your tips and advice! Here is what I found/did:
After putting on the rear camber arms, the toe had changed enough to cause the tires to feather. I finally figured out how to adjust the toe (and install the SPC Toe kit). So I installed those, and took it down to the alignment shop.
The specs can be found in the 'manuals' section on the forum under 'Service Manuals':
2009 370Z Service Manual
You will most likely will have to bring these measurements into the alignment shop, as they probably won't have the specs for '09 370z.
They are:
Rear Wheels (L/R): Camber (d = degree): min -2.16d; nominal -1.67d; max -1.17d.
Total Toe In: Distance: min .079in; nom .146in; max .213in.; Angle (degree decimal): min 0.09d; nom 0.15d; max .21d.
Front Toe: min .05in; nom .08in; max .11in
I hope this helps all you guys like me that are pretty inexperienced with suspension adjustments...
Brian