Need some help
 

I'm looking for a turbo that will fit my power goals. I have a t3 manifold and were prefer to run a external waste gate. I'm looking to make 350-400 at the wheels. I called top speed and they recommended a Garrett gt3076r with a .63 A/R. Then I called jay racing and he recommended a precision 5857 with a .63 A/R. Then I called precision and the tech there said to go with a 5558 with a .82 A/R. So now I'm all kinds of lost. Anyone have any input at all.
Thanks,
Branden

I guess it would help to put thats the turbo is for a 2002 svt

this is a question of my time ! I am in the search of turbo for the same numbers of ponies somebody has to make it clear

Gt3076 is all you need. Has already been proven to make over 400whp on pump gas. You also get a good spool with that turbo also.

i have gthe precision one. worked well. i went bigger so its just sitting here at home. its a 58 57mm great spool time starts up round 3k ish