I have ,in the past, shopped online for a Ford Factory extended warranty. There's Ford dealers out there happy to sell them at a discounted price. It's a quick profit for them with none of the work of trying to sell it.
In a situation very similar to the OP I'm thinking of picking up a GT350 as my retirement present. There's some new '19s and '20s at nearby dealers but also some very low mile pre-owned '18-'19s. The pre-owned prices are tempting and most have clean Carfax reports but no matter how I dig I can't...