Questions about Sirui MP-20 Quick change base

Peak Design Capture Plate V3 can be clamped into the Sirui MP-20 quick release base.

The existing quick-release base does not seem to be removable. You can screw the Sirui MP-20 onto the quick release plate of the Joby, but this is not optimal in terms of stability and you then need an Arca Swiss compatible plate to mount the camera. The plate sizes of the two systems are different; Joby uses the Manfrotto standard and Sirui uses Arca Swiss as mentioned.

As always, you can find cheap alternatives from Chinese suppliers.

According to the sketch from Manfrotto, the ball head is equipped with a groove so that the Sirui quick-release plate does not fit. It can probably be fixed, but it won't hold correctly, so it's better not to try it.