Here is the powerplant of my STE turbo.
It is a 3.1L 60 deg V6 with a gerrett t25 turbo.
the turbo set up was made by McLarean the same Company who made the SUPER CAR F1

SOME SPECS ON THE:
3.1 L OHV Multi port Fuel Injected
Turbocharged 60 degree V6
Vin Code "V"
HP 205
TQ 220 ft/lbs
Turbo-Intercooled with Multi-port injection
Close-Tolerance Assembly
89mm bore x 84mm stroke
Mahle Cast aluminum pistons w/ reinforcing steel ring
High capacity injectors 22lb/hr GM Multec Fuel Injectors
Specific, Hardened and Rolled Crankshaft
HD oil pump and Radiator
Specific Oil Cooler
and Low Restriction Dual Outlet Exhaust

And all that is mounted to a
High Preformance 4 speed automatic transmission

And that is Held to the Gound with Y99 Suspention Level II mounted to
16x 6.5" Rims holding P215/60R16 Goodyear Eagle GT + 4 tires.

Note:
I am Working on getting a 3.1L Turbo engine built with 400 HP {with out NOS} mounted to a Even Heavyer Duty Transmission.
My Power Plant
with
132,000+ Miles
Click to go home.
Cick to go back
Some more Specs on the car.

Final Drive Ratio 3.33:1

Gear    Ratio    MPH/1000 rpm     Speed in Gear 
  I          2.92           7.7              46mph@6000rpm
II          1.56          14.5             87mph@6000rpm
III         1.00          22.6            128mph@6000rpm
IV           .70          32.2            125mph@3900rpm

These are Factory specs. how ever if you get the Jeff M chip you can
Bring the RPM's up on IV Gear to get more Speed.
About the Gerrett T25 Turbo used on the 3.1L {V}
Garret T-25 turbo .62 A/R intake , .60 A/R exhaust w/ closed loop boost control and integrated wastegate.