Oh boy, I hope not! The manual has the seats after the floor IIRC so it shouldn't be that big a deal? It's a Kirkey so it's kinda small and open. We'll find out!
Yes. They're very good pumps and definitely necessary for motors like mine! It is a little longer with a slightly bigger filter (much more flow so more filter area) so it's kinda tricky to fit in. But it mounts the same way and is wired the same way. I recommend one!