I'd think with some clean up work and a good tune on the carbs he'll be fine. I wouldn't just drop a out of the box unit on and think it will be fine. There are some tricks you can do w/ the outboards that make them run better or he can bite the bullet and get the outboard metering plates. I don't have near the build but I do enjoy getting 15mpg and running mid 11's (low 11's soon)