Most T3/T04E with 0.63 a/r turbines reach full boost by around 4500-4800 RPM's and pull all the way to redline. A T04B will spool slightly faster, and if you go with a smaller turbine a/r like 0.48 it will spool a lot faster but die out up top.

Are you looking for a turbo that gives you better upper RPM performance or better lower RPM performance?