CFD car / racing project

Hi, I need someone to construct CFD model for a particular road car, i then need some "add-on" components developed (added to model, or bit possibly removed) to see how they will affect the car performance on a specific race track. It is a well known / commercially available car. This is for a personal project of mine (i do not have a massive budget for this, it's not a commercial project). I do not have any existing models. So the first phase of the project is for someone to construct the base model using an appropriate software tool, and run a base case of CFD. Please suggest tools and quote for first phase of the project. Cheers.