One of the reason the Kubota came home and the JD 1 series stayed at the dealer is the plastic. Just based on the plastic that I have on my JD mower (why would the plastic be different) The hood has cracked and is now held on with duct tape....you have to use extreme care when opening it to change the oil and expect to clean and re tape the stupid thing each time....you don't even want to check the oil in the machine anymore....that stupid plastic hood will just fall off.
And the price for the plastic hood....I bet if it was made out of SR-71 left overs it would not cost more. Forget that.
Plastic has its place...it is NOT on a tractor. And you know it costs John Deere about $3 to make that hood, but they charge $300 for it....screw you.