How many 370Z's have you seen with Brembo's from the factory? (I'll give you one guess and if it isn't "0" it's wrong).
Here's a picture (not sure if it was posted) but it's from the Work Wheels website of a 370Z Nismo... with Akebonos... and S13Ps...
Honestly, if I were you I'd contact forum vendor RavSpec and ask them any questions you had pertaining to the wheels because these guys you're speaking with don't seem to have the slightest clue.