Even though you like ball bearing turbos, I've been told that Borg has a new 7 blade staggered FMW 72 wheel and a bigger race cover, Coupled with a 87 turbine wheel. It has surpassed the 1k hp mark. Out flows and is lighter than most 75mm wheels.
T$ should be able to tell you more.
Does it tow well?
Why a single Ron? You know you'll probably have to change converters n stuff too, right?
GTX4708r with Precision .96 T4 Turbine housing (Give or take $4000)
Or
Comp Triplex Ceramic BB CT5X - 7887 - 78/87/1.00 T4 If I remember right they're right around $2300
Still looking for more opinion on the 100 trim of the turbine wheels though but they claim to be just as fast if not faster than the GTX (Their words)
I can't see being happy with a 1000hp capable charger towing 10k. Hot, Hot, Hot. Oh yeah the other thing...HOT!