Why dont you buy yellow stuff pads for for the 350z, EBC say red stuff is an alternative to standard pads on the 350z, with the upgrade being Yellows, i have yellows, they cost bugger all more and their performance is ment to be vastly improved than reds. If people say, oo they need time to warm up thats wrong, on first stab on the pedal they stop you like a wall, the second stab a second later is even more harse, but mega from the start.
Also, have you asked CS what he'll send 10 pairs out at ? He might be able to match with a lower order number.