Havest data for my database

I need to update my automotive database of the most current American Makes, then models associated with those makes, then trims associated with the models. Bottom line all the data I need is a complete list in Excel format of Makes, Models, and trims. I will then need for you to dump my old data and upload it with the new data. I need someone that is an expert at harvesting data from other tables. I will provide a list of websites that I feel has the most current data. If your able to do this I will also talk to you about paying a subscription for you to do this very task on a monthly basis to keep my data fresh. or I will offer you FREE advertising on my site where EVERYONE has to come to start their auction. Your ad will be the only advertisment on this page. Please let me know if your interested in this free offer. Thank you! Soonerfan