I have a 3.1 with a built bottom end and a Crane H260-2. I have a 3400 top end with a 65mm TB. I will be running code 59 with a 3 bar map. I am looking for a T3 flange turbo that will make power up to 6,200rpms. My whp goals are 450-500whp. The link be low is a turbo i was looking at. But i am not sure if it will meet my HP goals i have set. Thanks for your guys help and time.
http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-060&Category_Code=TBO
It's hard to tell with out knowing the size of the wheels. 76 trim turbine wheel and it's offered in a t-25 housing, I would say it has the 2871r compressor wheel(71mm) also. I would think this turbo would be too small for your hp goals. A turbo with these specs will suit your needs better.
http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT40/GT4088_703457_2.htm