Tune:
Engine: Vr38
Turbo:Reddy T60E 24k
Suspension: Any
Tire: nitto slicks large
Exhaust:Gold cat vx
Intercooler:Kawai
Piston:Vx Titan
Ecu:SF Type R +Vx Flux
Intake:vx HoneyComb+

I'll comment the gear timing

Gear timing
3.21
1.95
1.30
0.98
0.71
0.55
3.52
(Note:this will not work for heavy cars)

What the speed in mph

You can get any car to higher than its topspeed with the power of slipstream. For example, this LS Turd, which has a 255mph top speed.