You are 100% Correct, Sooooo.. I bought a Brand New Catalytic Converter and absolutely will inspect the engine, although I do have a 5 year 5000 Mile warranty on it now on Parts and Labor.. So its not so bad.. But still Inspecting it. Also ordered the Catch Can for it as well.. I think it was around $40. So yea...Definitely need that as well, because I believe back pressure and Carbon build Up Killed that Engine.Make sure to add an oil catch can to your replacement engine. Even a 20.00 kit with baffles works with some good PCV hard tubing. GDI carbon build up is greatly reduced if you can keep those PCV deposits from forming on your valves and in your cylinder/injectors. One more thing and this is very important! Make sure your catalytic converter is clean and not clogged. All those deposits go right into it and melt it clogging it and that can kill your engine due to back pressure. So make sure to remove it and inspect and clean it out if needed.!!! Your last engine may have released some inside so check it out!!! If you do this your replacement engine will give you a long smooth running life. One last thing, if you see lots of oil sludge on the valves of the replacement engine (you can see it when the intake is off, you may need a video probe). CLEAN it and clean the injector tips. Do all before you run it. After you finish all you need to do is add a bottle of Chevron Complete fuel system cleaner every oil change. I worked in the parts and service department for a Hyundai dealership and learned a lot.