Caddyshack out of interest do you have a graph to look at. I am thinking of swapping my 9180 efr for a smaller more usable efr capable of around 500, looking at the 7163 at the moment.
Agree on the above comments a efr is the way to go but dont just look at the dyno sheet as the transient response is where these turbos really shine which isn't evident on a power graph