The 907x body has no 'foot' or baseplate like the SWC and 500 series bodies do. The base of the camera is quite narrow and has electrical contacts for the accessory grip (soon to come) along with a locating peg hole and the tripod mounting screw hole.Congrats on that beauty.
I wonder if the 907X base plate is like the SWC or 503CW. If it is then I have a plate which fits into the bodies and works extremely well with no movement on the Smart Flex L which I am selling at around half of retail. Also have a plate for the Phase XF body too.
The Benro PU50 plate I've screwed onto it sits partially on the base of the back and feels very solid, like it was a built in piece of the camera.