Nathan Davis

The rear-facing clearance point is the one I'd check first on a single-position bench. Even without measuring, sitting in the driver's seat with the seat installed tells you a lot about how far forward you'll end up. On the threaded anchor behind the passenger seat, pulling one of the bolts and matching it at a hardware store before ordering is probably safer than trusting the manual's spec alone. Calling ahead about a CPST on shift makes sense too, since schedules vary by station.

The point about rear-facing hitting the dash on a single-position bench is worth emphasizing, since it can push the front passenger or driver forward more than expected. Have you measured where the seat's back edge lands once the belt is locked? On tethers, the manual's threaded hole behind the passenger seat is useful, but check that the anchor hardware matches the thread pitch before ordering. Also, a fire station check is a good idea, though not every crew has a current CPST on shift, so call ahead if you can.