Hi, this is how to install the general lee.

First of all You need to change the handling: Go to C:Program Files/Rockstar Games/Grand Theft Auto IV/Common/Data/Handling.dat or where you installed GTA IV
and change it to
DUKES 1800.0 0.42 85 0.0 0.00 -0.24 0.0 4 0.226 1.0 215.0 0.23 0.6 1.00 30.0 1.40 1.17 20.0 0.15 0.48 2.5 1.2 1.3 0.11 -0.14 0.0 0.58 1.0 0.6 0.95 1.5 0.0 22000 440000 0 0 

For the second step you need SparkIV/OpenIV.
Replace Dukes.wtd and dukes.wft with the files in this mod in the pc/models/cdimages/vehicles.img
after that can need to install the horn.
Open SparkIV And click on Browse Than click on pc/Audio/SFX/Resident.RPF/Than again Resident/Than import the file Horn.ivaud

If you have questions You can contact Reetkorst for any problems at GtaSjaak@hotmail.com

Authors: Reetkorst and General Racing

Warning!!: all the muscle cars have the horn now and if you have problems with the dukes you should replace it with another muscle car like the sabre gt.

the horn has been created by Reetkort, the car by General Racing.