This is my Monster Nissan Z. Start with a fully upgraded Nissan Z Concept in slot 1 of your garage, then enter these codes:

Engine (R390 LM)
1. 8E7913B8
2. 3C2D433A

Chassis (Calsonic Skyline)
1. 87DA09DA
2. 11A3585E

Drivetrain (Viper Team Orca)
1. F579D386
2. 02E8F48A
You should now have a 1392 hp Nissan Z concept

Here are the settings:
Front Back
Spring rate- 10.2 9.0
Ride Height 65 mm 65mm
Shock absor- ---- ----
Shock bound- Lvl 7 Lvl 7
Shock Reb. - Lvl 7 Lvl 7
Camber Angle- 2.3 1.1
Toe Angle - 0.0 0.0
Stabilizer - Lvl 5 Lvl 5
Brake Bal. - Lvl 15 Lvl 15

Gear Ratios
1st- 3.485
2nd- 2.290
3rd- 1.652
4th- 1.248
5th- 0.991
6th- 0.827
Final- 3.427
A.C.S. - Lvl 10
T.C.S. - Lvl 6