I have a s465 with less then 5k miles on it. This thing spools fast as **** on my 5.3 for having a T6 exhaust flange and 1.10 A/R. I'm sure I'm in the 520 rwhp range with this turbo. I'm buying a bigger turbo so that my buddy can also upgrade as well. I'm currently running 10# and can probably get 11# out of it but haven't had time to tune for over 10#. Turbo is is perfect condition. No problems at all. I'm asking $450 obo.
My number is 520-979-2913 call or text. If you have any questions. Text would be fastest.