ReadMe:

In the file - [Game folder]\data\handling.cfg
Replace the lines with the settingswith:
BUFFALO 1500.0 4000.0 2.0 0.0 0.0 -0.1 85 0.7 0.9 0.5 5 200.0 28.0 5.0 R P 11.0 0.45 0 30.0 1.2 0.12 0.0 0.28 -0.24 0.5 0.4 0.25 0.50 35000 2800 10200000 1 1 0

In the file - [Game folder]\data\vehicles.ide
Replace the lines with the settingswith:
402, buffalo, buffalo, car, BUFFALO, BUFFALO, null, executive, 5, 0, 0, -1, 0.7, 0.7, 0

In the file - [Game folder]\data\carmods.dat
Replace the lines with the settingswith:
buffalo, nto_b_s,nto_b_s,nto_b_tw

In the file - [Game folder]\data\carcols.dat
Replace the lines with the settingswith:
buffalo, 10,10, 13,13, 22,22, 30,30, 39,39, 90,90, 98,98, 110,110


By DDK
Enjoy it ;)