It’s not the money mang!
It’s the fact that people would rather buy a PROPERLY sized turbo mang!
That turbo will make lots of power, it would just take too long to spool up…meh, to each their own.
You should build your RB20 with this thing! If you can make 645WHP with this turbo on a B18B Non VTEC, I’d LOVE to see what you can do with an RB!!!