I have one S256 on sale right now, .63 AR, 4" inlet, 57lb turbine wheel.
$925. Brand new turbo, never even been fitted up to a car. With shipping this would normally be a $1050 turbo. Should bolt up in the same location as a regular old t3/t04e that has a .63 ar turbine housing, spool up quicker and make more power! Good for 550 whp!!
The one in center: