Compound question:
We're selling motorcycle parts which have a start and end year for application. I want to add the start and end years as two new properties to our products, and display them on the the product page- this seems somewhat doable from the searching through the forums.

However, I also would like to alter the advanced search to include a year drop-down menu, and tweak the search to return products who's date range includes the selected year.

I'm guessing that this is a difficult (impossible?) request and probably not a DIY job. So anyone who might be able to get this done, or any feedback about how feasible it is, would be greatly appreciated.