The Recaro Profi SPG also comes in XL. Still a fixed back seat. It's side mount, so it can sit lower than a bottom mount.
https://www.recaro-automotive.com/us...iberglass.html
Keep in mind that in the event of a rollover, if you're in a fixed back seat the roof will collapse and the seat will not, which means your head probably will when the roof hits it. It might be worth looking for a reclinable seat.