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Hi 2fast4u,
Unfortunately, I do not have dyno testing to compare the t3/t4 versus the 3071. My current best guess is that the 3071 will spool somewhere between the 46 and the 50 trim, but I don't have data to back this up at the current time. I hope to be able to do some testing in the next couple months.
As for the "all internals beefed up", what does that mean for head work? OS valves, fully ported?
As far as my best guess, I believ the 3071 will spool somewhere between the 46trim and the 50 trim. I believe it will make more top end than the 46 and the same or a little less top end than the 50trim. I think at the boost level (18-19) any of the turbo choices should have no problem making good power to 7500rpm. The 46 will be the first to start losing on the airflow side should you go to a higher rpm, or to more boost given your other airflow mods.
I hope that has helped you a little.
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