Wanted - Vintage Dark Ride / Horror Related Amusement Park Carts and or Props

[Mutated Skeleton]

I know this is a long shot but one of my collecting goals is to track down a visually interesting vintage dark ride cart. If anyone has or knows of where one might be found, I'd be incredibly grateful to find out, thank you! I'm also on the hunt for interesting vintage dark ride props used on the rides.

Here's a few examples of the sort of carts I'm looking for..