Use Alci's IMG Editor 1.5 or Crazy IMG Editor to import files from the folder to [GAME FOLDER]\models\gta3.img:

In file [Game folder]\data\handling.cfg
Find the line that starts with
BLISTAC 
Replace found line with
BLISTAC       1500.0 2000.0 2.0 0.0 0.0 -0.10 50 0.85 0.85 0.5 5 200.0 26.0 5.0 R P 11.0 0.55  1  30.0  1.4  0.1  0.0  0.20  -0.10  0.5  0.0  0.25  0.50  35000  c0110004  C00000   1    1   0

Credits:
Original author: kanoon48 (kanoon-world.blogspot.com / kanoon.storage@gmail.com)
Original modification author: [Ro]Wippy (wippy-garage.blogspot.com)