No, the smartest way for him to go is to dump that 170 for whatever he can get for it, and replace it with a 225, one way or another. A 225 will make as much power, naturally-aspirated, as a turbocharged 170, I believe, and will be a heck of a lot cheaper to build and with a lot less trouble, and the learning curve will be considerably more gentle. That's a lot more important than being able to twist the motor 8,000 piston-breaking rpm.
I LOVE the idea of turbocharging a slant six, but the application has limited usefulness... and, this is not it.
