For the expense, the hassle and mostly for the relaibility issues, I would be selling the Corolla and getting a Rex or a MPS. The Corolla sportivo is deisgned for 143kw. That means that the engine internals, gearbox internals, driveshaft, Fuel system, engine mounts, engine internals, cooling system, etc is all deisgned around an engine that makes 143kw at the flywheel. 150kw atw means about 200kw at the flywheel.
My problem would be reliability. Once you start getting these numbers, then you will start seeing the life of other components that you haven't stregnthened, seriously deteriorate. Eventually it becomes an unrelaible money pit. If you want a car that has 200kw then let the manufacturer spend millions in development work to make sure everything is strengthened.
I have been down this path before and invested tens of thousands. It went faster than a turbo porsche, but there is a reason those things cost 300k. Anyhting more than intake, exhaust and chip, and you had better have a good mechanic and lots of spare cash in the account. It might take a while to start to see the effects, but once you strengthen one thing, then somehting else becomes the weakest link. You will also never be able to sell it.
Just my humble opinion.