Unfortunately they will not fit. I have been in a similar situation:
* Used to own a Vienta widebody (only the V6 had PCD 114.3, not the I4 of the same chassis).
* Had 18"x8" wheels on it using +35mm offset.
* Supra 16" are 8" wide also, but +50mm, meaning they sit closer to the "middle" of the car than normal rims.
The 18"x8" used to clear the strut by a measly 5mm. I am fairly confident that you will never fit +50mm offset rims onto the car unless you install huge (and illegal) spacers.