I ended up buying this rack in the 24 inch size. The arms angle up slightly to reach the bolt area. There is a little bit more room between the bottom of the rack and the wheel than I like. Just purely an aesthetic thing. Seeing now the room available, the 20 inch likely would have worked--with a more severe angle up for the arms. As I was buying from a source that would not take returns, I played it safe and bought the 24.

https://www.racktime.com/en/racktime...uct/foldit-fix

I'm doing my first transport of the Katu tomorrow. I'm picking up a compact rental car today--crossing fingers the Katu can fit in the trunk (with the back seat down). I'm a little bit worried the basket may need to be removed.