Two picklists for selecting spare parts

Hi, I own a website where I sell spare parts for swimming pool products. All the exploded views are grouped products with "custom design" = "eclate". Here is a current production example: [login to view URL] I would the page two show two picklists so that customers can easily access the spare parts they want to buy. The attached document shows you exactly what I want. I would like customer to have the choice to access their spare parts by the VIEW # of the exploded view or by SKU #. When they select the part they want (from the picklist), the system should display the spare part. Those picklist should be dynamic. What I mean is that If i add a new VIEW # or SKU then it should appear in the picklist. Finally I want to make sure that those two picklists are functionning on apple, samsum, etc. products (iphone, ipad, samsung galaxy....). The picklist can be next to each other like in the screenshot (if possible) or aligned vertically. Thanks Paul