I have one other question that hopefully someone can answer. My company sells aftermarket exhaust systems and intake systems for vehicles that if a customer tried to go through the subcategories and find their exact product, it could take them awhile. I would like to create a dropdown that does the following:

Dropdown Menu #1
Honda,
Chevrolet,
Nissan
etc...

Auto Reloads to Dropdown # 2 (Will Only Show Available Years for Specific Manufacturer Above)
2009
2008
2007
etc...

Auto Reloads to Dropdown # 3 (Will Only Show Vehicle Models for a specific brand and year)

Auto Reload to Dropdown # 4 (Will Only Show Available Engine Sizes for a specific Brand, year, and model.


Maybe I am a little over my head for this one but if anyone can point me in the right direction that would be great!