Looking for some feedback.

Obviously, it'd be much less trouble to just swap in a J-spec. However, with the relative uncertainty of Japanese motors, and the relative low mileage of my own N/A, I was wondering what people thought about undertaking a turbo N/A on my own car. Is it worth it? I have been using Aaroncake and the C-Berger N/A turbo (from teamfc3s) writeups for reference. Not looking for huge power, maybe ~250whp or so (Probably using the stock turbo in both scenarios). Which would be the better choice in terms of achieving that kind of power, trouble/time invested, and money?