I am far from an expert at anything "turbo," having very little real-world, hands-on experience in the meager 4-years I have been trying (like yourself) to learn what I can about them, but a few things stand out.
It seems like it's not a very good idea to swap a mismatched turbocharger, in terms of size, from a small-displacement engine to a larger one, if that difference is dramatic. The most successful "junkyard" swaps i have noticed, have been units like the OEM (original equipment manufacturer) turbos off 3.8-liter, V-6, Buick Grand National motors, which differ only a few cubic inches (six?) from our 225 motors. A turbo from a 2.2-liter engine will be "running out of breath" by the time your 225 gets to 4,000 rpm.
That may not sound too bad in view of your original contention that high-performance is not your goal, but in actual practice, I would bet that within a short time, you'd be trying to figure out a way to remedy this "strangulated" situation.
My advice, would be to try to trade that small turbo for one more compatible with the flow demands of a 225 motor. You'll be a lot happier in the long run, I believe.
Turbocharging is not a simple nor easy path to take, in any case, but because of a lot of contributory factors having to do with engine design, forced inductrion and the slant six seems to be an excellent choice!
I really hope you don't become discouraged with this project, because, even though it comes a considerable cost in terms of time and effort. the payoffs are well worth the expenditure, I believe!
Boost is addictive!! :cheers:
Good luck!!!
