You’ll need this if you are doing a sound isolation in your MK5 Supra to fix the subwoofer rattle. Follow one of the tutorials below
I have remixed a model from Thingiverse - shortened the back pipe and added a collar to it so that it would hold to the thin horizontal back panel without a use of glue or screws. I have printed mine on an SLA printer (0,1 mm layers is enough) to make it look OEM and am pretty happy with the results. I have used Prusa Tough Rich Black resin and coated the visible outer part with 2 layers of matte transparent spray laquer (to prevent visible scratches, resin prints scratch easily).
As a bonus I have also added a simple model to use as a speaker mesh to cover the metal cage and wadding behind the subwoofer port. The file is just a 9x9 cm square, to make it a mesh you have to set top and bottom layers to 0 in your slicer and infill to 30 or 40 % honeycomb to make it a mesh, I have printed mine in PLA and stuck it there with a double-sided tape on all sides so that it doesn't touch the metal. My personal tip is to spray paint the metal and wadding behind the speaker mesh with a matte black paint to make it even less visible.
Hope it helps and be sure to post your results ;)
The author remixed this model.
The back tube was made shorter to fit the Supra and a collar was added to it so that it would keep the two parts fixed to the back panel.