Prestashop plugin modification

The job is to add more collumns to a vehicule fits plugin, please read this before bidding on job, if your not serious or you bid isnt the real price, please don't waste my time. So now vehicule parts finder looks like this : MAKE --- > MODEL ---> YEAR Here how i want to add collumns to it : DROP DOWN (WILL BI TIRE OR WHEEL ---> YEAR ---> MAKE ---> MODEL ---> SUBMODEL ---> OPTION So the plugin would add 3 collumn and make it fit with CSV import feature of the plugin