But with that being said, I know people with 66's and 190's-225's under the 600 mark... depends on the dyno and conditions, as well as suspension, wheels/tires, tuning etc.
I'd like to see a turbo spool at 14-1500, make 600 on fuel, and be very street-able with light towing, is this possible, could be I guess under ideal conditions. I hope Morgan decides to be the guinea pig for the gt3788r or the new billet bb precision 64/66, it would be nice to see something different.
With a divided housing and divided up pipes I think either of those turbos should spool very quickly on the street. I think MPD's new manifold/divided up pipe combo is going to be a hot ticket item soon.