Anyone Running Gt 6157 Bb ?

[TURBO E38]

JUST Wondering if anyone has installed the GT 6157 ball bearing turbo with boosted technology from full throttle?

I have a un-opened stock engine except for new valve springs and hardened rocker shafts.

my present turbo is a Cheetah ball bearing stage III, WHAT WILL THIS 6157BB TURBO DO for my combo? 15 HP?
RUNNING STOCK TORQUE CONV.

THANKS< > TURBO E38