Create Zen cart Script and Product Creation

I need a zen cart script and corresponding products created for my automotive website. We sell replacement headlight bulbs for all makes/models of cars. I need a script that allows for a customer to select their vehicle make/model/year and the correct product (the headlight bulb size) will be displayed. I am open to any solution that completes this task. If you want to create products based on vehicles (rather than simply displaying the correct bulb size) that is fine but it must be very neatly done. Here are the known details: 1. You will need to scrape all known vehicle bulb sizes (that includes every make/model/year and their high beam, low beam and fog bulb sizes) 2. A script will need to be developed that displays the correct product when a customer enters their vehicle's information (make/model/year) 3. The script must be compatible with zencart (this includes the shopping cart, check out, etc)