On the advice of @mia , and with the experience of @amd , I have decided to finally get Catboat-1 running again by rebuilding its toolhead. I'm going with the Xol, using the Tap carriage and the MeowXol faceplate. Now I have to order some parts (in transit now), but I can print the shell at least!
Overall, _super_ impressed with the design of these parts, especially their supports.