WTB DI2 11-speed brifters, battery, wiring. Not derailleurs

I’m trying to convert my gravel bike to an electronic 1x with a clutched XT DI2 rear derailleur.

To pull it off, I need the brifters, wiring and battery of an Ultegra or Dura-Ace DI2 11-speed. But I don’t need the road derailleurs.

Anyone happen to have those parts lying around, begging to be sold? If so, PM me and let me know what price you want.

Thanks.