The replacement piece for the base of the killswitch kickstand, take out the pin of the existing one and reassemble the whole part and it should fit nicely.
keep in mind that the original Dbrand universal mount requires you to print and glue the attachment mechanism in two parts.
This is not officially endorsed by Dbrand though since you still need the original stand to make this work I think it will be alright.
The author remixed this model.
only uses the attachment hardware from the universal mount, the rest is all custom-made.