I'm on my third Fit (due to accidents, no fault of the car). I've had two chances to replace the Fit with something else, and didn't, which says a lot. Only pins I've had trouble loading are Strange Science and Panthera. SS was too tall due to the piano hinge folding the head down onto the highest part of the body. I detached the head (but not wires), slid it forward a bit, good to go.
Panthera was too long, possibly because I have the genuine Honda center console installed. Still hauled Panthera by leaving it hanging on the cargo lip, pulling the hatch most of the way down with a strap, and shoving a folded blanket between the game & hatch. Totally fine in dry weather. Panthera might have gone in all the way in with the factory armrest, which is puny & attached to the right side of the driver's seat.