Add Modules to an excisting website

I own a website karfinder.com. I need to make changes to it. I need it to search and retrieve info from car dealerships inventory, etc DO NOT BID unless you have visited the site and asked me for details I need it to search the websites of the car dealerships that I enter from admin and retrieve information from their inventory listed on the sites. I need changes made to an existing website 1- I need “ Year” added to search 2- I need this script to be able to read dealership websites API s and access their inventory 3- I should be able to edit /delete dealerships APIs in admin 4- When someone searches for year, make, model and enters their zip code, the right side of the page where there are static pictures change to all the search results from all the dealerships that are included in the search and list all the cars priced from low to high from the partner dealers . 5- I need all the info listed MINUS the dealerships contact info. 6- When a visitor clicks on any listing, they are taken to my contact page to fill out info. 7- The visitor info is sent to admin and the dealership who owns the car to their contact email address.