if 15psi doesnt get him 600rwhp thats very sad(built motor)
if a V6er can do it Im sure a 2v should be able toit will depend on engine components, tune, accessories. it can get there at 15psi, just got to get the right stuff. hell the termi's arent getting but 600 at 15psi with a blower swap. the turbo will make better #'s because of parasitic loss, but thats just a rough comparisson. the 2v will be more restrictive than the 3 or 4v's