* Likely bolted down: Most likely, the bench seat is bolted to the floor. This means it *can* be removed, but you'll need the appropriate tools (sockets, wrenches) and possibly some muscle.
* Potentially custom modifications: The conversion process might have involved significant modifications to the floor or seat mounting. It could be welded, screwed in unusually, or even integrated into custom cabinetry.
* Check for access: Look underneath the seat for bolts. Check around the edges for any fasteners. If you can't readily see how it's attached, you might need to carefully investigate.
In short: It's *probably* removable, but you'll need to inspect the seat's mounting to be certain, and be prepared for some work.
