Installing with spark IV,
	Open C:Program Files/Rockstar Games/GTA IV/pc/models/cdimages/vehicles
or           C:Program Files/Grand Theft Auto IV - Episodes From Liberty City/pc/models/cdimages/vehicles
	Repleace mule.wtd and mule.wft, then rebuild and save.
Open game and enjoy your new ride

(C) MrNaikkeli