Yes, the filters are still 2" but they are (As an estimate) 20 to 25mm closer to the sensor than the tilt plate, if you have their current suggested setup of camera>filter wheel>OAG>Tilt plate.
If I bought one I would be tempted to have the tilt plate machined out to M68 to thread directly on to my focuser. It would wipe out the holes they show on a 62mm circle but that would not matter and the tilt screws are on an 80mm circle. Or if tilt was not an issue the OAG could be direct threaded to my focuser using the M68 thread it has, with some appropriate spacers made up.
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