As For now I' running a 3200 gov spring. Smoke screw tweaked, and full power screw tweaked. Soon I will have a smaller turbine housing, and Injectors. I'm thinking of water and meth injection. I've got the VE pump like in the VW's not the P pump that you have. Its not as easy to get power out of the ve.
Coop
The POD injectors would be a nice addition,and then you may not need the smaller housing.It will spool better,and help keep EGT's in check.
Is your truck auto or stick ? A good convertor is like adding 100 HP with these trucks.Dodge uses a gas TC behind the Cummins,and it stalls too high,way above the torque peak,especially when you turn up the power.Adding a shift kit or valve body will help the trans hold the power too.
I have 370 injectors,a Piers stoopid race pump,a custom made cam plate,4 inch exhaust,and a BHAF.Timing bumped to 17 degrees.With the stock trans,I've run a best of 13.24,blowing right through the convertor and slipping the trans the whole way.I just built myself a DTT auto with custom ATS low stall convertor,and it really hooks now.I hope to break into the mid 12's this year,if I can keep the EGT's in check.Looks like twins will be my next project.