I think the stage 3 .63 turbine will probably get you all the power you need but if your ever trying to make something crazy like 600+whp your probably just going to want to get a whole new (bigger) unit cause your going to be maxing out the compressor pretty badly at that point as well.

 

running neptune and yes with anti lag. i build about 7 lbs of boost with antilag on my 57 trim

 

T04e Large compressor 0.70 a/r 60-1 wheel
T4 0.50 a/r turbine for fast spool up
CHRA 360 thrust system
watercooled
shipping expedited service.

 

In that case i would get the 60--1 with a .63 ar

 

Good to know. I had the same question on the turbos.