I finally converted my printer to DXU, but I am not using the original DXU print head, instead, I make use of the original head with modification, so that I can keep using the metal parts. I found this modification design from Chat room, however, the author only released the STL files and some them seems not work well. Therefore, I based on the original head dimension and reference to the STL file, I redraw all of them with Solidwork, modified some key area, attached the photos of my build as well as the parts photo exported from Solidwork.
This head now used for over 100 hours