I won't cover all the levels, but it sure appears if you want that massive sized one, you need 106 of each part. Here are the request links as provided by the Bumblebees, Kit, and the Letter P.
So While my Farm was loading earlier, I decided for Giggles, I'd click the Duck Banner ad under the game offering some Farmcash in exchange for Getting a Discover Card..
TO my amazement As I scrolled through the offers, I saw this one