I have another router with a 800W water-cooled spindle and I’ll use it to make a separate mount for the Makita. The mount will actually fit the Makita so I may do it on the X-Carve once it’s up and running.
There is a user here @JohnScherer who is selling a [Makita mount][1] but I imagine shipping will be a killer.
[1]: Any interest in a Makita RT0701 spindle mount for X-Carve