A lot of time and money has been spent on doing this the right way, sourcing out the right parts, This is why I didn't go with a 2.0d/rav 4 diff, because I wanted every part to match and I went out of my way to buy the whole celica cut, I have adjustable tein coilovers for front and adjustable tanabe pro at rear.
you would be surprised that even with the celica diff and axels the tires sit exacty at the same width so vitz is wider than I thought, you are right its not simple job, I had to get 4wd steeing, fuel tank goes In the trunk, strengthening bars etc etc :), its a complete celica under a vitz body
car is currently going under new 6 puck clutch/pressure kit and should be back on road tomorrow IA, will share video after running for the clutch is done, previous testing results were amazing, super traction, truly satisified 