Auto Parts

I want to start Auto Parts eCommerce store.
How can I Filter my products, by Categories or by Specifications?

My product have parameters
1.Mark (example VW)
2.Model (example Golf)
3.Series (example Seies 5(2004-2008))
4.Body (example Hatchback)
5.Modification (example 2.0 L AXW)
6.Part Type (example Engine)
7.Part SubType (example Fuel System)
8.Part (example Fuel System Filter)

my product is Number 8
i have 3 variants
1. Create categories from 1 to 7
2. or for Product(8) create specifications from 1 to 7
3.or 1 and 2 variants together

any other variants?

Please check this link: https://www.nopcommerce.com/boards/t/35900/carparts-filter-plugin.aspx

Other ideas?