The entire software architecture of the car changed with the X356, I think this would probably be impractical. Stereo is on D2B so might be feasible...
That's a 1.25cm difference in radius, you'll probably get away with it but I wouldn't be surprised if you found them rubbing on full lock and if the...
Can you imagine people on a Toyota forum posting how good it was that their car made a journey and didn't overheat, with hills and everything! :lol:...