My friends 2004 Dodge diesel 1500 gets boost all the time, but that's a diesel.
I would think if you downsize the A/R on the turbine housing you will like the driveability a bit better, but that's just me, I am sure when you are @ full boost you dont give crap about what happpened before 3400.
I would think a .84 A/R would work nicely & get to full boost by around 2800. ,,,Just me thinking out loud,dont mind me.
I am just dreamen when I can feel some boost on my inline6!!!
I get full boost on my Syclone 4.3 by 2400. It's A/R is approx a .63 T3
I have to step into it to show positive boost,it's ( boost pressure ) not all the time, not even close.
MBHD