A gen 3135 DW is the best option. It will have to be glued onto the Noob DW, or even right onto the DWO if you don't want to save the old DWO. In effect the gen DW becomes a DWO. There is a lot of room in the case to do this so the gen DW won't have to be modified to fit and can be re-claimed later for use in its gen capacity, or in a 3135 based rep as a DW.
Many many thanks KJ2020 for your precious and competent suggestions. Best Wishes!!!