Auto Parts drop downs - Where do I get the content?

I'm thinking about creating a Auto parts site and would like to know if there is a source for getting the different combination's of year/make/model/engine etc... like most auto parts sites use in drop down fashion.

To clarify, I can create the drop downs, but I need the information to populate those lists.

Is there a company or service our there that sells that kind of information; maybe in database form?

Thank you

 

Are you looking for something like this site?

http://www.carpartslist.com/partrequest/

 

I was looking for something more like this (see right column):

http://www.carparts.com/

 

I don't think someone sells that kind of database. You need to do by your own