I'm not sure if this is compatible with other Volvo or Bosch ECUs, but it's designed for the 360glt.
I used blade terminals with 9mm blades. It's meant to be tight to fit them in the slots (I'd suggest soldering the wires into the terminals, because they may not fit when crushed). Getting the housing to fit into the existing harness might push the blades out, but just wiggle them back in, 1 by 1 if you have to.
There is extras on the adaptor that are not needed for my exact ecu, but they were there, so I modeled them, then realised they were needed haha
I'd suggest printing it on its side, so it will be stronger on the tab etc