With a lack of response I went ahead and ordered the seat swivel with a safe from Kiravans. I have attached some pics of it installed in my T6 today.
I wouldn’t give it 5 stars as there are a couple of issues that could easily be fixed by Kiravans to make this a 5 star product. As you know the seats have 2 studs at the front and 2 threaded holes at the rear. The safe seat swivel comes with just holes. So out of the box you immediately realise you need to go and buy some bolts and nuts to fix the seat to the base. It would be much easier if they were supplied in the box, especially at £188!
You will also lose the lower seat cubby holder that is on the original base, there are no fixings on the kiravan safe base to fit it back on.
The safe door is loose when it is shut, it rattles around as if it needs some rubber pads on the inside to make a snug sealed fit. This would of really bugged me if I hadn’t had already planned on carpeting the base, hence filling in the gap with carpet.
Overall though the swivel at the moment is creak free and appears very solid, I chose this one as it keeps the original height of the seat as the swivel is included so no additional plate to raise the height of the seat. Also I am not having anything under the passenger seat so it made a useful space for a secure safe.