74083 oscommerce relational dropdown

I need a relational drop down system for OSCommerce that will show all the products meeting the criteria of the users 3 selections. (Make, Model and Year) Model will be relational to Make, and Year will be relational to Model. [ie: 2002 Honda 954RR : Make=Honda, so only the honda models will show in the second field. Model=954RR, Year=2002 and 2003 will show in the year drop down because those are the only years the 954RR was produced.] I also need a way to be able to take all the products in the database and have them linked to multiple combinations due to the fact that certain items work with many different models. I am willing to due grunt work and organizing. I have been working with OSCommerce for 1 year and I feel as if I am an Intermediate User.