Have not done this job but with the 165's brakes being very similar in size to the SV21 I can't see any advantage in going this way. If you are trying to squeeze under 15 inch rims maybe look at the st185 rotors, 278mm vented fronts, 288mm solid rears.
I don't know if those calipers would even bolt onto your Camry
struts. This is all I know and can suggest. Good luck.
Mitch.