Any specific specs I should be looking for to hit my target goals? And will an 80# injector get me there?

 

At least 85-90lb/min worth of airflow on the compressor in the >70% efficiency range at whatever boost you want to run.

80s will be fine for 700hp, but you are going to need a little more for 900, assuming you mean power at the wheel. 96s@4bar will safely get you there.

 

Ok, I'll have to make some phone calls on the turbo. And I figured I would need bigger than 80# as the most I've seen is 834hp.

 

What are ya'lls thoughts on an 88/83/.96 T4? I know it's not going to make the top end power of a bigger turbine charger but will this still put me in my power range?