This is the route I’m taking. Swapping out servos for clearlink with built in drivers, more power etc. The Masso allows for 5 axis. You will consume 4 of those if you want auto squaring. Leaving one for a 4th axis. Since is uses a more traditional probe set up, I also went with a wireless probe set up to make tool changes easier. Then with the outputs I can select mist or flood and trigger a whole host of other things like solenoids for Automatic tool changes (with a different spindle)
All these things can be done in Linux CNC but require some setting up vs out the box with the masso, hence the additional cost.
This is what led me down the custom path and one of the most in depth write ups on the conversion…
And another post…
Depending on how deep you dive, a few hundred $'s and some long nights will get you there.