My boost is set "around" 18/16 (it could be higher, I don't watch the gauge as I go down the track), I have a WG, ported manifolds and full 3" exhaust.
Everything else is stock (that matters)
1) So an M3 nozzle would be enough?
2) Is the extra cost of the trunk mounted kit worth the time it cuts down the install time? (you didn't answer that last time

)
I can order no sooner than Thurs, that's logistics for you.