There's someone who posted here about his 1NZ-FXE swap many years ago, and Frankenstein Motorworks is putting a 2AR-FXE on a 2AR-FE manual trans, so I wouldn't be surprised if the bolt patterns were identical despite coming with different transmissions from the factory.
You can put a 1NZ-FXE in your car without an issue because it has a standard intake-only VVT-i mechanism. Supposedly the 2AR-FXE has no exhaust VVT-i so hooking it up to a normal Camry will make the ECU complain. I question whether it would be worth the improvement however, it's only a ~3% difference in efficiency at high load, and since you're here no doubt you're aware of pulse and glide
